Imryll, God of Solace

Defender, lifelink, indestructible
Imryll, God of Solace can't block unless there
are five or more creature cards in your graveyard.
Whenever you gain life, exile target creature
card from your graveyard. Create a token that's
a copy of that card, except it's 1/1, it's a Spirit
in addition to its other types, and it has flying.