Oskar, Rubbish Reclaimer

Legendary Creature — Human Wizard - (rare)

This spell costs  less to cast for each different mana value among cards in your graveyard.
Whenever you discard a nonland card, you may cast it from your graveyard.

Price

cardkingdom 0.59

cardmarket 0.15

tcgplayer 0.54

cardsphere 0.64