River Song + Epitaph Golem + Time Warp

River Song

Epitaph Golem

Time Warp

How it works

1. Cast Time Warp by paying 3, causing you to take an extra turn after this one.
2. Activate Epitaph Golem by paying 2, causing you to put Time Warp on the bottom of your library from your graveyard.
3. Move to your next turn, drawing Time Warp from the bottom of your library due to River Song during your draw step.
4. Repeat.

This clever engine bends the laws of time and the library itself by leaning entirely on River Song, whose unique static ability completely inverts your draw mechanics so you draw cards from the bottom of your library rather than the top. Once you cast Time Warp to take an extra turn, it naturally lands in your graveyard, but Epitaph Golem steps in as the crucial bridge by letting you pay two mana to tuck that sorcery right back onto the bottom of your library. When your next turn begins, River Song ensures you draw Time Warp instead of a normal card, letting you cast it again to create an unbreakable loop of infinite turns.