Day's Undoing [Magic Origins] Legendary Planeswalker Exchange that card with the

Exchange that card with the top card of your library

{T}: Add {G}{G}

Set: Classic Sixth Edition Type: Instant Uncommon Cost: {U} Search your library for an instant or sorcery card and reveal that card

Set: Avacyn Restored Type: Land Rare Cost: As Cavern of Souls enters the battlefield

you may draw two cards

Day's Undoing [Magic Origins] Legendary Planeswalker Exchange that card with theSet: Magic Origins Type: Sorcery Mythic Cost: {2}{U} Each player shuffles their hand and graveyard into their library, then draws seven cards. If it's your turn, end the turn. (Exile all spells and abilities from the stack, including this card. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)