Zethi, Arcane Blademaster + Walk the Aeons + Cosmic Intervention
Produces: Infinite turns, Lock
- Zethi, Arcane Blademaster
- Walk the Aeons
- Cosmic Intervention
- Color identity
- WU
- Mana
- {7}{W}{U}{U} each turn
Prerequisites
Zethi does not have summoning sickness. You control at least three Islands.
Steps
- Declare Zethi as an attacker.
- Zethi's last ability triggers, causing you to pay {3}{W} 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 {4}{U}{U} 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.
How to execute this combo
The "Zethi, Arcane Blademaster + Walk the Aeons + Cosmic Intervention" combo takes 7 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite turns, Lock.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.