Soul Immolation

Sorcery

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.

Serena Malyon

Legalities

LEGAL Standard
LEGAL Pioneer
LEGAL Modern
LEGAL Legacy
LEGAL Vintage
LEGAL Commander
LEGAL Oathbreaker
LEGAL Alchemy
LEGAL Historic
LEGAL Brawl
LEGAL Timeless
NOT LEGAL Pauper
LEGAL Penny