V1, Machine of War

Coin Flip (Whenever V1, Machine of War attacks, flip a coin. If heads, V1 gains double strike until end of turn. If tails, V1 gains trample until end of turn).
Child of Man (Whenever you flip two coins and get the same result, you may search your library for a
card named "V1, Child of Man," reveal it, and
put it into your hand. Then shuffle your library.)