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Unshakable Tail

Creature — Zombie Detective

When this creature enters and at the beginning of your upkeep, surveil 1.
Whenever one or more creature cards are put into your graveyard from your library, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
{2}, Sacrifice a Clue: Return this card from your graveyard to your hand.

CMC
3
Mana cost
{2}{B}
Color identity
B
Rarity
rare
Set
Murders at Karlov Manor Commander
Price
$0.41
EDHREC rank
#7301
Buy on TCGplayer
Unshakable Tail card art
Unshakable Tail puts a 2/2 Dog Soldier token into play and mills the opponent for two every time a creature dies — a continuous milling engine stapled to a body for three mana. Mirko, Obsessive Theorist and Golbez, Crystal Collector both lean on it hard, and the cost-to-output ratio is hard to argue with.

Best Commanders

Commanders with the highest synergy

01
Mirko, Obsessive Theorist

Mirko, Obsessive Theorist

81.5% of decks · synergy 0.78

Mirko, Obsessive Theorist's whole game is milling opponents and cashing in on what lands in their graveyard, and Unshakable Tail turns every creature death into a free mill-two trigger that stacks with Mirko's own activations — in a deck that often runs sacrifice outlets and recursive creatures, the triggers fire constantly.

02
Golbez, Crystal Collector

Golbez, Crystal Collector

19.9% of decks · synergy 0.17

Golbez, Crystal Collector cares about Shadow creatures and generating value through combat and sacrifice, so Unshakable Tail slots in as both a token producer and a mill enabler that keeps the graveyard full for Golbez's plans.

Format Analysis

Where it lives, where it can’t

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

Unshakable Tail is legal in Commander, Legacy, Vintage, and Oathbreaker, but Commander is where it actually sees play. In Legacy and Vintage the card is too slow and too low-impact to compete with the raw speed of those formats. Commander is its home: multiplayer games extend long enough for the death triggers to pile up, three opponents means three graveyards to mill, and token-producing enchantments that also generate value on a per-death basis are exactly what creature-heavy and graveyard-focused commanders want.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.41 bulk tier

At $0.41, Unshakable Tail is bulk, which makes it an easy include budget-wise — there's no financial barrier to testing it. Bulk enchantments with narrow but deep synergies tend to stay cheap unless a high-profile deck breaks them out, so don't expect the price to move meaningfully.

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Sources

Mentioned

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