V1, Child of Man

Master of War (Whenever you flip a coin, if you win the flip, you may flip another coin. This ability triggers only once each turn.)
Humanity's Will (If V1, Child of Man is the only creature you control, it transforms into V1,
Machine of War at the beginning of your end step.)
Sacrifice the Greater Good (If there is another copy
of V1, Child of Man on the battlefield, transform into V2, Machine Slayer. Then shuffle your deck.)