
Each player shuffles their hand and graveyard into their library, then draws seven cards.
Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Echo of Eons has 7 printings, first in Modern Horizons (2019). EDHREC ranks it #2,615 among Commander cards. It appears most in Nekusar, the Mindrazer decks (11,216 on EDHREC). 1 public deck on TCG runs it. It has 7 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.