Souls of the Lost 121 (The Lost Caverns of Ixalan)

As an additional cost to cast this spell, discard a card or sacrifice a permanent. Fathomless descent — Souls of the Lost's power is equal to the number of permanent cards in your graveyard and its toughness is equal to that number plus 1.

NM - $1.50
LP - $1.50
MP - $1.50
HP - $1.50
DMG - $1.50