River Song + Anurid Scavenger + Temporal Manipulation

River Song

Anurid Scavenger

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. At the beginning of your upkeep, Anurid Scavenger triggers, causing you to put Temporal Manipulation on the bottom of your library from your graveyard.
4. Move to your draw step, drawing Temporal Manipulation from the bottom of your library due to River Song.
5. Repeat.

This clever loop relies on bending the rules of where your library's resources live to take all the time in the world. By casting Temporal Manipulation, you secure an extra turn to keep the engine rolling, but the real magic begins during your upkeep: Anurid Scavenger forces you to return a card from your graveyard to the bottom of your library, safely tucking the extra-turn spell away instead of losing it forever. Normally, drawing from the bottom would break standard play, but River Song completely flips your perspective, allowing you to draw cards from the bottom of your library rather than the top so you immediately pull Temporal Manipulation right back into your hand.