Ratchet, Field Medic // Ratchet, Rescue Racer + Preston, the Vanisher + Ajani's Welcome + Ephemerate

Ratchet, Field Medic // Ratchet, Rescue Racer

Preston, the Vanisher

Ajani's Welcome

Ephemerate

How it works

1. Cast Ephemerate by paying , blinking Ratchet, causing it to enter the battlefield as Ratchet, Field Medic.
2. When Ratchet, Field Medic enters the battlefield, Preston and Ajani's Welcome trigger.
3. Resolve the Preston trigger, creating a token copy of Ratchet, Field Medic that is a 0/1 Illusion.
4. Put the nontoken Ratchet into your graveyard due to the legend rule.
5. Choose not to return Ratchet to the command zone from your graveyard.
6. When the Ratchet, Field Medic token enters the battlefield, Ajani's Welcome triggers, causing you to gain 1 life.
7. The Ratchet, Field Medic token triggers, causing you to convert it into Ratchet, Rescue Racer, and return Ratchet from your graveyard to the battlefield.
8. When Ratchet, Field Medic enters the battlefield, Preston and Ajani's Welcome trigger.
9. Resolve the Preston trigger, creating a token copy of Ratchet, Field Medic that is a 0/1 Illusion.
10. Put the nontoken Ratchet into your graveyard due to the legend rule.
11. Choose not to return Ratchet to the command zone from your graveyard.
12. The Ratchet, Rescue Racer token triggers, as well as Ajani's Welcome.
13. Resolve the Ratchet, Rescue Racer trigger, causing you to convert it into Ratchet, Field Medic.
14. Put one of the Ratchet, Field Medic tokens into your graveyard due to the legend rule.
15. Resolve the Ajani's Welcome trigger, causing you to gain 1 life.
16. Repeat from step 7.

This looping engine relies on a clever dance between reincarnation and lifegain to continuously recycle your cards. When you cast Ephemerate to blink Ratchet, Field Medic, Ajani's Welcome rewards every entry with a life gain trigger, which in turn fuels Ratchet's ability to convert and resurrect artifact cards from your graveyard. Because Preston, the Vanisher creates a fresh Illusion copy whenever a non-cast creature arrives, the legendary rule steps in to send the original Ratchet straight to the graveyard—right where Ratchet, Rescue Racer needs it to be to catch the next trigger and keep the loop spinning infinitely.