Chanticli, Awoken Pyre

Pact - Sacrifice a land.
Chanticli, Awoken Pyre can't attack or block and
is indestructible unless you have a pact with it.
At the beginning of your upkeep and whenever Chanticli attacks, Chanticli deals X damage to
each other creature and each opponent and you
gain X life, where X is half the number of land
cards in your graveyard, rounded up.