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Grimoire Thief

Creature — Merfolk Rogue

Whenever this creature becomes tapped, exile the top three cards of target opponent's library face down.
You may look at cards exiled with this creature.
{U}, Sacrifice this creature: Turn all cards exiled with this creature face up. Counter all spells with those names.

CMC
2
Mana cost
{U}{U}
Color identity
U
Rarity
rare
Set
Morningtide
Price
$0.71
EDHREC rank
#23652
Buy on TCGplayer
Grimoire Thief card art
Grimoire Thief mills three cards from an opponent's library every time it taps, and with Paradise Mantle it can do that for free on every combat step. The setup cost is real — you need untap enablers or the equip outlet — but the payoff is a repeatable mill engine stapled to a counterspell that gets stronger the more you've exiled.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Grimoire Thief is a Commander card through and through — the slow accumulation of exiled cards and the threat of a free counterspell only matter in a game that goes long enough for the table to respect them. In Legacy and Vintage, a three-mana 2/2 with a tap ability doesn't clear the baseline power bar; there are faster ways to interact with graveyards and better counterspells that don't require setup. Commander is where Grimoire Thief earns its slot: multiplayer tables mean the exile pile grows quickly, opponents are incentivized to respect the sacrifice ability, and untap synergies that would be fringe in other formats are often deck-defining here.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.71 bulk tier

At $0.71, Grimoire Thief sits squarely in bulk territory — easy to acquire and easy to cut without remorse if the build moves on. It's a niche enough card that demand is unlikely to spike it; pick it up if the synergy is there and don't worry about the cost.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.