Magic The Gathering - Lorwyn Eclipsed - Soul Immolation - 0156

As an additional cost to cast this spell, blight X. X can't be greater than the greatest toughness among creatures you control. (Put X -1/-1 counters on a creature you control.) Soul Immolation deals X damage to each opponent and each creature they control.

Soul Immolation is a Mythic, Sorcery card from the Magic The Gathering set Lorwyn Eclipsed (MTGSC-ECL-0156)