Magmamancer

Trample
{x}; Magmamancer gains +1/+1 for {x} where {x} is the number of {r} you tap to activate this ability. Activate this ability only during your attack phase.
Magmamancers often cover the bodies of their victims with a thin coat of magma and let it burn slowly into the flesh. In the end they are rewarded with distorted statues of what used to be enemies.