Zethi, Arcane Blademaster + Walk the Aeons + Faith's Reward
Zethi, Arcane Blademaster
Walk the Aeons
Faith's Reward
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 3 to cast a copy of Faith's Reward.
Resolve the copy of Faith's Reward, returning all permanent cards that were put into your graveyard this turn to the battlefield.