Simo Häyhä

Defender, Crazy 10 (When this card has 10 craziness counters on it, exile this card. During your upkeep, put a craziness counter on this card.)

Simo Häyhä enters with X phase counters. Simo's toughness is equal to the amount of phase counters on him.
If he takes damage, you may instead remove a phase counter from him and phase him out.
When he dies, if he had phase counters on him, you may pay {s}. If you do, return him to the battlefield with a craziness counter on him. Then, remove a phase counte