Chthonian Nightmare + Skullwinder + Temporal Manipulation

Chthonian Nightmare

Skullwinder

Temporal Manipulation

How it works

1. Cast Temporal Manipulation by paying 3, 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 Temporal Manipulation 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 creates an unstoppable, self-sustaining recursion engine by trading resources back and forth from the graveyard. Whenever you recast Chthonian Nightmare, its energy-generating trigger funds an activation that sacrifices Skullwinder to pull Temporal Manipulation back to your hand, while Skullwinder's own entry trigger recycles Temporal Manipulation itself. Because Temporal Manipulation grants you an extra turn, you can repeatedly cast it alongside Chthonian Nightmare and Skullwinder to take infinite turns, locking your opponents out of the game completely.