Zethi, Arcane Blademaster + Walk the Aeons + Cosmic Intervention Combo

Zethi on the battlefield.

Cosmic Intervention in exile (Cosmic Intervention with a kick counter on it in exile).

Walk the Aeons in hand.

Zethi does not have summoning sickness. You control at least three Islands.

each turn available

Declare Zethi as an attacker.

Zethi's last ability triggers, causing you to pay to cast a copy of Cosmic Intervention, creating a replacement effect that is active this turn.

Move to your postcombat phase.

Cast Walk the Aeons with buyback by paying and sacrificing three Islands, putting the Islands in exile instead of the graveyard and creating a delayed triggered ability due to Cosmic Intervention's replacement effect.

Resolve Walk the Aeons, causing you to take an extra turn after this one and returning Walk the Aeons to your hand.

At the beginning of your end step, Cosmic Intervention's delayed triggered ability triggers, returning the exiled Islands from exile to the battlefield.

Repeat each turn.

Infinite turns

Lock