Calamity Mod Wiki
Jungle Dragon, Yharon
Jungle Dragon, Yharon.png
AI TypeJungle Dragon, Yharon AI
Damage330 / 528 / 660 / 759 (Contact)
180 / 300 / 332 / 348 (Flare Bomb)
200 / 340 / 376 / 396 (Flarenado)
300 / 520 / 548 / 564 (Infernado)
180 / 300 / 332 / 348 (Phase 1 Flare Dust)
250 / 440 / 464 / 476 (Phase 2 Flare Dust)
250 / 440 / 464 / 476 (Splitting Fireball)
300 / 500 / 550 / 632 (Death Flare Bomb Ring)
Max Life1,080,625 / 1,729,000 /
KB Resist100%
Inflicts debuffLethal Lava BurnLethal Lava Burn
100% chance
Debuff duration3 seconds (All projectiles except Flarenado and Infernado)
5 seconds (Flarenado)
7 seconds (Infernado)
Debuff tooltipLosing life
Immune toConfusedPearl AuraOn Fire!
Coins1 Platinum Coin
Yharon map.png
Map Icon

Jungle Dragon, Yharon is typically the third to last Calamity boss that you will face in your playthrough, fought after The Devourer of Gods. Yharon is summoned by using a Jungle Dragon Egg in the Jungle biome at any time.

This guide will mention items exclusive to Expert and Revengeance Mode with no special formatting and will follow the intended progression.

Terrain Preparation[]

Although Yharon must be summoned in the Jungle, leaving the biome will not enrage him. However, Yharon summons two border tornadoes 155 / 125 blocks to the left and right of you from the block you use the Jungle Dragon Egg. Going outside of these tornadoes will render Yharon nearly invincible.

Build walls before where the border tornadoes are placed as the tornadoes will increase with height. Usually, 127 blocks works in Normal and in Expert, while 97 blocks works in Revengeance and Death mode. These will function as a barrier to prevent the player from accidentally touching the border tornadoes, which will instantly kill them. Yharon will enrage if you go too high from where the Jungle Dragon Egg was used, to avoid this build a roof 660 blocks up from the starting position in Normal and Expert while have this roof be 555 blocks up in Revengeance and Death Mode. A single set of platforms in the middle as well as leveling the ground of the arena will give the player a place to reset flight time as well as prevent them from getting caught by the terrain. Great vertical and horizontal mobility is a must for this fight, considering the high mobility of the boss itself. Campfires and Heart Lanterns are a useful asset to boost your health regeneration, so they should be placed throughout the arena.

Throughout the fight, Yharon will summon Detonating Flames as he takes damage, so keep this in mind when building your arena.

Gearing Up[]



  • Elysian Tracers are the best set of wings for Yharon that also double as a pair of sprinting boots.
  • Depending on your class, you should make these post-DoG class accessories.
  • Summoner players should be using all 3 Statis' accessories: Statis' Blessing, Statis' Curse, and Nucleogenesis.
    • Summoner players should also use the Profaned Soul Artifact as it summons Profaned Guardian minions that provide defensive and offensive bonuses as well as an excellent additional source of damage.
  • The Statis' Void Sash is a valuable asset for the player; providing a jump boost, dash, and ninja dodge.
  • The Amalgam is a powerful accessory as it provides a damage boost along with greatly reducing the damage over time taken from the Lethal Lava Burn debuff.
  • The Community is a superb option providing both offensive and defensive bonuses as well as 15 percent additional flight time.
    • The Affliction provides significantly larger boosts to max life, damage, defense, and damage reduction than The Community and is easier to obtain, but has a smaller variety of stat increases.
  • Asgardian Aegis provides some defensive boosts as well as a powerful dash.
    • The Elysian Aegis can be used as well if you prefer its longer dash and boosted life regen at the cost of less defense and no immunity to debuffs.
  • Rampart of Deities is a strong defensive option providing additional immunity frames and damage reduction while also aiding in offense with 20 armor penetration. It additionally boosts the effects of the Celestial Cuffs for Mage players.
  • Core of the Blood God should be prioritized, as it helps ward off damage with a bit of extra damage reduction but, more importantly, halves Yharon's high contact damage every 20 seconds.
  • The Sponge is useful for providing defensive boosts as well as a jump boost.
  • Melee players using Yoyos should equip a Yoyo Bag to increase the range and effectiveness of the yoyo.
  • If playing a hybrid class with summoner, the Eldritch Soul Artifact is a good option, especially for Mage or Rogue, providing boosts for all classes.
  • Should you know Yharon's attack patterns very well, the Dimensional Soul Artifact is an excellent choice for boosting your DPS with high damage bonuses at the cost of increasing the damage you take by 15%.
  • When paired with a dash, the Alicorn mount can reach extreme horizontal speed, at the cost of some vertical speed.
  • The Reaper Tooth Necklace greatly improves DPS if you are using weapons that have a low use time or ignore immunity frames. However, the 15 armor penetration can still be useful with any weapon.


Weapons dropped from The Devourer of Gods or crafted with Cosmilite Bars should suffice in most situations.


  • The Stream Gouge is a fantastic option that deals tremendous damage to Yharon.
  • The Enforcer's high raw damage helps bypass Yharon's high defenses.
  • Galaxia is an excellent option with its homing as well as providing the player with buffs throughout the fight.
  • The Excelsus is another sword that deals good damage and provides a bit of extra DPS if Yharon is hit with the blade.
  • The Eradicator is an option that can hit high DPS when the boomerangs stack and all hit Yharon with their lasers.
  • Devil's Devastation is a powerful option when landing the sky shots.
  • Galaxy Smasher is an extremely strong option at the cost of very low range.


  • The Phangasm is an excellent option that deals high damage with Vanquisher Arrows.
  • The Alluvion is another bow that deals high damage with its typhoon arrows and monsoons. It requires Wooden Arrows in order to be used effectively.
  • The Anti-materiel Rifle is a powerful option for its raw damage.
  • The Minigun and SDFMG are good guns that have long range and are very easy to land hits with when using Holy Fire Bullets.
  • The Starmada is an additional option that has more expensive ammunition, but does high amounts of damage when fully charged up.
  • The Pack is a strong hard-hitting option at the cost of speed but with valuable homing.
  • The Skullmasher has incredibly good DPS despite its slow fire rate. However, it is a rare item variant, so it may take a long time to farm for it.
  • The Norfleet is similar to the Skullmasher, having very high DPS, but a slow firerate. Additionally, the massive AoE of the explosions can wipe out Yharon’s minions with ease. It is also a rare item variant, and may be difficult and/or tedious to obtain.



  • The Corvid Harbinger Staff and the Endo Hydra Staff are the best options, as they are fast and they deal high DPS.
  • The Staff of the Mechworm is a good option for summoners as it deals high damage, particularly when Yharon sits still. However, it's not as effective during subphase 4 due to not being able to consistently catch up with Yharon's teleports.
  • The phantoms from the Ethereal Subjugator are the best option for filling up the remaining slots if you are using the Mechworm.
  • The Cadaverous Carrion can be used to deal extra DPS.



  • The Well Fed buff provides a useful all around stat boost.
  • The Ultra Liquidator is an option for applying Ichor to Yharon for 20 seconds for classes such as Ranger, reducing his high damage reduction and defense.
    • The Ultra Liquidator activates the Summoner nerf. As such, the Golden Gun should be used to apply Ichor instead.
  • The Slimy Saddle and Suspicious Looking Jelly Bean are powerful mounts that can be used evasively to fall quickly away from Yharon and out of harm's way.
    • The Alicorn is another mount that provides excellent horizontal movement.

The Fight[]

Phase 1[]

Yharon will spawn offscreen, meaning you should be prepared to dodge him as he approaches you. At the start of the fight, a tornado will appear on each side 120 blocks away from where you use the Jungle Dragon Egg. It is imperative to avoid these at all costs as they will instantly kill you.

In subphase 1, Yharon's pattern will always be the same: he'll do two shorter charges, spawn some Detonating Flames, do a short charge, then do a much faster charge preceded by a pause, before spawning Flarenadoes. It is important to keep ahead of Yharon to avoid his high contact damage. The faster dashes can be avoided by dodging perpendicularly. Yharon also tries to align himself above the player while in the fast charge telegraph, so dodging them is easier when falling.

At a certain health interval dependent on your difficulty, Yharon will become briefly invincible and move on to subphase 2. The pattern is largely the same, although Yharon will have a few more fast charges and now has a "bullet-hell" attack where he will shoot a barrage of fireballs in all directions. Yharon will always teleport above the player when he does the bullet hell attack, and he does charges out of the attack, therefore flying upwards before he begins the bullet hell can be useful to allow yourself to gain distance from Yharon.

Again, once he reaches a certain health interval dependent on difficulty, Yharon will become invincible and transition to subphase 3. This subphase typically lasts the longest and contains even more of Yharon's longer dashes. Between dashes, Yharon can spawn Detonating Flames and Flarenadoes. At the end of the pattern, Yharon will once again do a bullet-hell style attack, however the fireballs will be faster than in subphase 2. Again, Yharon teleports above the player and follows the attack with charges, so flying up before the bullet hell starts allows for you to put distance between yourself and Yharon.

As Yharon summons Infernadoes, it is useful to try and lead them near the sides of the arena where they are much easier to manage.

Phase 2[]

Upon reaching 55% health, Phase 2 will begin.

For a short while Yharon will be invincible, it is important to keep firing as Yharon will summon Detonating Flames to his aid.

Compared to Phase 1, Phase 2 is a drastically different style of fight. Although Yharon continues to charge at you, this phase has many more different projectiles. It is important to maintain good distance throughout the entire fight. The general approach to this phase is a circle or oval around the arena. When falling, using Suspicious Looking Jelly Bean or Normality Relocator is highly recommended to avoid Yharon as he gains on your position. When moving left and right, constantly dash to keep ahead of Yharon. However, be wary to not accidentally run into leftover projectiles while fleeing.

Yharon will continue to do bullet hell attacks in this phase, and in fact, does them in all subphases. However, he won't charge immediately after bullet hells in phase 2's patterns, making distance not as important of a factor when dodging bullet hell attacks. In fact, staying close during bullet hell attacks in phase 2 can allow the player to get in free damage while Yharon hovers near the player preparing for the next attack in his pattern.

Note that Yharon's charge patterns change between subphases. In subphase 4, he only does slow charges. In subphase 5, he does a fast charge followed by a slow charge, which can potentially catch the player off guard unless properly accounted for. In subphase 6, he'll do fast charges, with nearby random teleports in between. It is important to keep an eye on where and when Yharon teleports before the second fast charge and to dodge accordingly.

Again, when Yharon summons Infernadoes, it is useful to lead them near the sides of the arena, where they are easier to manage.

General Tips[]

  • Disabling backgrounds can help players who have trouble focusing on all the different things that are going on during the fight.
  • It is recommended to use both the Rod of Discord and the Normality Relocator. The Rod of Discord will help you avoid the Flarenadoes and keep your distance without altering your movement afterwards, while the Normality Relocator can be used to quickly escape Yharon's fast dashes.
  • In Revengeance and Death Mode, using Adrenaline or Rage can be used to easily burst down Yharon's health when it is low to swiftly end the fight as Yharon gets much more hectic in his last percentages of health.
  • Be aware that in Death Mode, Yharon has decreased attack delay, which can pose a problem to less experienced players.
  • Yharon roars before he dashes, so listening out for this audio cue is an easy way to time a dash out of the way. The timing is different in the Revengeance+ phase, however learning these timings can make the fight a lot easier.