Rakdos, Lord of Riots

Legendary Creature — Demon - (rare)

You can't cast this spell unless an opponent lost life this turn.
Flying, trample
Creature spells you cast cost  less to cast for each 1 life your opponents have lost this turn.

Price

tcgplayer 1.07

cardmarket 0.84

cardkingdom 1.29

cardsphere 1.05

manapool 1.06