
Spells you cast cost {1} less to cast for each card with the same name as that spell in your graveyard.
Locket of Yesterdays has 1 printing, first in Time Spiral (2006). EDHREC ranks it #7,937 among Commander cards. It appears most in Flubs, the Fool decks (1,541 on EDHREC). It has 3 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.