Prerequisites
- Adarkar Valkyrie on the battlefield
- Intruder Alarm on the battlefield
- Mirrorhall Mimic // Ghastly Mimicry in hand
- Adarkar Valkyrie does not have summoning sickness
- You control at least one legendary creature
- available
Steps
- Activate Adarkar Valkyrie by tapping it, targeting any legendary creature you control
- Cast Mirrorhall Mimic by paying , choosing to have it enter the battlefield as a copy of the legendary creature targeted in step 1
- Put the legendary creature into your graveyard due to the legend rule
- Adarkar Valkyrie and Intruder Alarm trigger
- Resolve the Intruder Alarm trigger, untapping all creatures
- Holding priority, activate Adarkar Valkyrie by tapping it, targeting Mirrorhall Mimic
- Resolve the Adarkar Valkyrie trigger from step 4, returning the legendary creature to the battlefield from your graveyard
- Put Mirrorhall Mimic into your graveyard due to the legend rule
- Adarkar Valkyrie and Intruder Alarm trigger
- Resolve the Intruder Alarm trigger, untapping all creatures
- Holding priority, activate Adarkar Valkyrie by tapping it, targeting the legendary creature
- Resolve the Adarkar Valkyrie trigger from step 9, returning Mirrorhall Mimic to the battlefield from your graveyard as a copy of the legendary creature
- Repeat from step 3
Results
- Infinite death triggers
- Infinite ETB
- Infinite LTB
- Infinite mana creatures you control can produce
- Infinite untap of all creatures
Required Cards 3
Adarkar Valkyrie
Snow Creature — Angel
Mirrorhall Mimic // Ghastly Mimicry
Creature — Spirit // Enchantment — Aura