Adarkar Valkyrie + Intruder Alarm + Clone

Adarkar Valkyrie

Intruder Alarm

Clone

How it works

1. Activate Adarkar Valkyrie by tapping it, targeting any legendary creature you control.
2. Cast Clone by paying 3, choosing to have it enter the battlefield as a copy of the legendary creature targeted in step 1.
3. Put the legendary creature into your graveyard due to the legend rule.
4. Adarkar Valkyrie and Intruder Alarm trigger.
5. Resolve the Intruder Alarm trigger, untapping all creatures.
6. Holding priority, activate Adarkar Valkyrie by tapping it, targeting Clone.
7. Resolve the Adarkar Valkyrie trigger from step 4, returning the legendary creature to the battlefield from your graveyard.
8. Put Clone into your graveyard due to the legend rule.
9. Adarkar Valkyrie and Intruder Alarm trigger.
10. Resolve the Intruder Alarm trigger, untapping all creatures.
11. Holding priority, activate Adarkar Valkyrie by tapping it, targeting the legendary creature.
12. Resolve the Adarkar Valkyrie trigger from step 9, returning Clone to the battlefield from your graveyard as a copy of the legendary creature.
13. Repeat from step 3.

This clever loop puts Adarkar Valkyrie's delayed resurrection trigger into overdrive by pairing it with a Clever Impersonator-style trick. Once you cast Clone to copy a legendary creature, the legend rule immediately sends it to the graveyard, which triggers Intruder Alarm's static ability to untap all your creatures—including Adarkar Valkyrie itself. This lets you endlessly alternate targets between the original legend and your cloned copy, continuously bouncing them in and out of the graveyard to farm infinite enters-the-battlefield triggers and untap your entire board.