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

cardsphere 0.39

manapool 0.51

tcgplayer 0.39

cardmarket 0.65

cardkingdom 1.29