More Than Meets the Eye 3 (You may cast this card converted for 3.)

At the beginning of your end step, target opponent loses life equal to the life that player lost this turn.

If no life is lost this way, convert Blitzwing.
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Blitzwing, Adaptive Assailant

Living metal (As long as it's your turn, this Vehicle is also a creature.)

At the beginning of combat on your turn, choose flying or indestructible at random. Blitzwing gains that ability until end of turn.

Whenever Blitzwing deals combat damage to a player, convert it.