Malefic R. Dragon

Flying, Exalted, Offering, Malefic

Enchantments you control have Ward {3} and
"{t}:Add one mana of any color."

Sacrifice a creature: This creature gains +X/+X
until end of turn. X is equal to the mana value of
the sacrificed creature.

Rock creatures in your graveyard have "{2},Exile
this creature: Each player loses 3 life."