The Ceremonial Urn is a craftable post-Moon Lord item used to summon Supreme Calamitas at any time when used at an Altar of the Accursed. It is not consumed upon use; therefore, it can be used as many times as the player desires.
When the Ceremonial Urn is used, a square arena comprised of Arena Blocks will be created around the player which can only be destroyed by the Crystyl Crusher. The player appears in the center of the arena, making it a high priority to use the item in a proper location.
Attempting to use the item while Supreme Calamitas is alive will cause it to do nothing.
The arena generated is 159x159 blocks (inner available area is 157x157 blocks) and 127x127 blocks (inner available area is 125x125 blocks) in Death Mode.
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- This item was previously named the Eye of Extinction and resembled a Life Seeker.