Zethi, Arcane Blademaster + Walk the Aeons + Sudden Salvation
Zethi, Arcane Blademaster
Walk the Aeons
Sudden Salvation
Infinite turnsLock
How it works
Cast Walk the Aeons with buyback by paying 4 and sacrificing three Islands, causing you to take an extra turn after this one and return Walk the Aeons to your hand.
Declare Zethi as an attacker.
Zethi's second ability triggers, causing you to pay 2 to cast a copy of Sudden Salvation.
Resolve the copy of Sudden Salvation, returning the three Islands that were sacrificed from your graveyard to the battlefield.