First printed in Outlaws of Thunder Junction (2024)
All 4 prints
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Outlaws of Thunder Junction (OTJ) #192, 2024
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Outlaws of Thunder Junction (OTJ) #348, 2024
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Outlaws of Thunder Junction Promos (POTJ) #192p, 2024
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Outlaws of Thunder Junction Promos (POTJ) #192s, 2024
Assimilation Aegis 
Artifact — Equipment
When this Equipment enters, exile up to one target creature until this Equipment leaves the battlefield.
Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, that creature becomes a copy of a creature card exiled with this Equipment.
Equip 
- Illustrated by
- Matt Stewart
Legality
- Legal in
- Standard, Pioneer, Modern, Legacy, Vintage, Future Standard, Historic, Timeless, Penny Dreadful, Gladiator, Commander, Duel Commander, Tiny Leaders, Oathbreaker, Brawl, Standard Brawl, Competitive Brawl
- Not legal in
- Pauper, Alchemy, Premodern, Old School 93/94, Pauper Commander, PreDH
Rulings (7)
- If you somehow exile multiple creature cards with the same Assimilation Aegis (probably because its first ability was copied or something caused it to trigger more than once), you choose one of the exiled creature cards each time its second triggered ability resolves. You don't have to choose the same one each time.
- When Assimilation Aegis's second ability resolves, the creature Assimilation Aegis is attached to copies exactly what was printed on the original creature card and nothing else. It doesn't copy any information about the object the card was before it was exiled.
- When the creature Assimilation Aegis is attached to becomes a copy of an exiled creature card, it's neither entering nor leaving the battlefield. Any enters-the-battlefield or leaves-the-battlefield abilities won't trigger.
- If Assimilation Aegis leaves the battlefield before its first ability resolves, the target creature won't be exiled at all.
- Any non-copy effects that applied to the creature Assimilation Aegis is attached to before it becomes a copy of another card will continue to apply once it becomes a copy. The same is true of any counters that are on that creature.
- If there are no creature cards exiled with Assimilation Aegis when its second ability resolves, the creature Assimilation Aegis is attached to won't become a copy of anything else. It will remain just as it was.
- If you somehow exile a noncreature card with Assimilation Aegis's first ability (possibly because it was a copy of a creature while on the battlefield), you can't choose to have the creature Assimilation Aegis is attached to become a copy of that card when Assimilation Aegis's second ability resolves.
Prices
MTGO price: 0.009 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
In Limited on MTG Arena
Win rates in Arena drafts and sealed, retrieved from 17Lands (CC BY 4.0).
| Set | GIH WR | vs set | IWD | Games |
|---|---|---|---|---|
| Outlaws of Thunder Junction (OTJ), Premier Draft | 56.6% | +2.5 | +5.8 | 9529 |
| Outlaws of Thunder Junction (OTJ), Sealed | 57.7% | +2.4 | +4.1 | 562 |
- GIH WR
- win rate of the games in which the card was in the opening hand or drawn
- vs set
- points above or below the average win rate of all decks in the set
- IWD
- improvement when drawn: GIH WR minus the win rate when the card stayed in the library
- Games
- games in which the card was seen
Combos
6 combos, the most popular first:
- Infinite turns, Lock: Assimilation Aegis + Forge Anew + Medomai the Ageless
- Infinite turns, Lock: Assimilation Aegis + Brass Squire + Medomai the Ageless
- Infinite turns, Lock: Armory Automaton + Assimilation Aegis + Medomai the Ageless
- Infinite turns, Lock: Assimilation Aegis + Balan, Wandering Knight + Medomai the Ageless
- Infinite turns, Lock: Assimilation Aegis + Leonin Shikari + Medomai the Ageless
- Infinite turns, Lock: Assimilation Aegis + Auriok Windwalker + Medomai the Ageless