Opposition Agent is a Creature — Human Rogue (mana cost {2}{B}; Creature — Human Rogue; 3/2; rarity: rare; most recent printing listed by Sc...
Opposition Agent is a Creature — Human Rogue (mana cost {2}{B}; Creature — Human Rogue; 3/2; rarity: rare; most recent printing listed by Scryfall: Commander Legends). Scryfall lists its Commander legality as legal, Modern legality as not_legal, and Legacy legality as legal. Here is what the card actually does and how to judge whether your deck wants it.
The card, on its actual text
Flash
You control your opponents while they're searching their libraries.
While an opponent is searching their library, they exile each card they find. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast them.
That text is the whole evaluation. Cards earn slots by what their text does in the games you actually play — the turns where mana is tight, the board is contested, and a card drawn late has to matter immediately. Judge this one against the role it would fill in your list, not against a highlight reel.
Build and check your list with the MTGBrew card database, and browse every card mentioned here in the MTGBrew AI deck builder on MTGBrew.
Which decks want it
Every slot should argue for itself against the card it replaced. When you test a new inclusion, play it through the deck's normal sequence — early development, mid-game pressure, late-game closing — and notice where it helps and where it sits dead in hand. Cards that only shine in the best-case scenario are the first cuts when a proven role-player needs the slot back.
If this topic is on your bench, keep going with Prosper, Tome-Bound Commander Guide: How the Deck Actually Wins — it covers the neighbouring decisions from a different angle, and the two pieces together give you a fuller picture than either one alone.
Keep reading
Keep reading: Prosper, Tome-Bound Commander Guide: How the Deck Actually Wins and Coming Soon: Your MTGBrew Profile Record — vs the Computer and vs Real Players.
The honest verdict
Protect the plan, but do not smother it. A small protection package earns its keep when your commander is the engine; beyond that, extra protection spells dilute the very strategy they are guarding. The same discipline applies to interaction: run enough answers to stop a game-ending threat, and spend the remaining slots on cards that move your own plan forward.
For current details on this card and everything like it, check the MTGBrew card database — articles like this one deliberately leave prices out, because prices move and your deck decisions should be made on live numbers.
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