Life Stone

The  is a pet summon item that spawns a Jack Frost. The Life Stone can be obtained from chests found in the Stranded Ship.

When player jumps or flies, Pyro Jack will carry Jack on it's back.

Trivia

 * This is a reference to Megami Tensei franchise, which is mainly developed by Atlus. This also references Atlus's mascot.
 * The flying animation when Pyro Jack carries Jack Frost on it's back is a reference to the SMT spin-off game Shin Megami Tensei: Synchronicity Prologue.
 * Its name also refers to an item from Megami Tensei which is very important during demon negotiations.