Deathless Skeleton

Transform your skeleton into an indestructible internal bastion. For the duration, you gain resistance to bludgeoning, piercing, slashing, and necrotic damage, immunity to critical hits, and advantage on CON saving throws. If you would be reduced to 0 hit points, you may spend 1 charge to drop to 1 hit point instead.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.