Karador, Ghost Chieftain + Izzet Chemister + Time Walk

Karador, Ghost Chieftain

Izzet Chemister

Time Walk

How it works

1. Cast Time Walk by paying 1, causing you to take an extra turn after this one.
2. Activate Izzet Chemister's first ability by paying and tapping it, exiling Time Walk from your graveyard.
3. Move to your next turn.
4. Activate Izzet Chemister's second ability by paying 1, tapping and sacrificing it, casting Time Walk from exile without paying its mana cost.
5. Resolve Time Walk, causing you to take an extra turn after this one.
6. Cast Izzet Chemister from your graveyard by paying 2.
7. Repeat from step 2.

This Vintage-legal combo achieves infinite turns by using Karador, Ghost Chieftain's unique ability to cast a creature from your graveyard once per turn. You begin by casting Time Walk to take an extra turn. During that span, Izzet Chemister exiles the Time Walk using its first ability, and then sacrifices itself via its second ability to cast the exiled spell for free. Because Karador, Ghost Chieftain allows you to recur Izzet Chemister right back from the graveyard on your subsequent turn, you can simply reset the loop and chain extra turns indefinitely.