嗝屁猫的项圈#212

Guppy's Collar is a passive item.

• This item is a tribute to Edmund McMillen's cat Guppy.[1]
• This item may also be a reference to the Schrödinger's Cat thought experiment.
• With this item, at any given point, Isaac will on average be resurrected once more (before he is killed). This is not dependent on how many times he has been resurrected already, a property known as memorylessness.

Bug! When the Keeper is resurrected by Guppy's Collar, there is a chance he spawns with a Half Soul Heart instead of Coin Hearts. When an HP up is obtained, Keeper will have 1 Coin Heart, as well as the Half Soul Heart he had previously. When a second HP up is obtained, Keeper will lose the Half Soul Heart and have 2 Coin Hearts, like normal. Bug! Guppy's Collar can be exploited to gain infinite lives. When Isaac's last will is on the screen, close the game, re-open it, and continue the run. Isaac will appear to die again, and will also have a separate chance to be resurrected.