Chthonian Nightmare + Skullwinder + Walk the Aeons

Chthonian Nightmare

Skullwinder

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying 4, causing you to take an extra turn after this one.
2. Move to your next turn.
3. Cast Chthonian Nightmare by paying 1.
4. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get EEE.
5. Activate Chthonian Nightmare by paying EEE, sacrificing a creature with mana value 3 or less, and returning Chthonian Nightmare from the battlefield to your hand, returning Skullwinder from your graveyard to the battlefield.
6. When Skullwinder enters the battlefield, it triggers, returning Walk the Aeons from your graveyard to your hand.
7. Cast Chthonian Nightmare by paying 1.
8. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get EEE.
9. Activate Chthonian Nightmare by paying at most EEE, sacrificing Skullwinder, and returning Chthonian Nightmare from the battlefield to your hand, returning a creature with mana value 3 or less from your graveyard to the battlefield.
10. Repeat.

This clever loop relies on Chthonian Nightmare to constantly recycle your graveyard while generating and spending energy counters to fuel its own return to your hand. By sacrificing Skullwinder to pay the Nightmare's activation cost, its entry trigger lets you pull Walk the Aeons right back out of your graveyard to your hand. You then recast Walk the Aeons for extra turns, ensuring your opponents never get another active phase to disrupt your engine.