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Miirym, Sentinel Wyrm

Legendary Creature — Dragon Spirit

Flying, ward {2}
Whenever another nontoken Dragon you control enters, create a token that's a copy of it, except the token isn't legendary.

CMC
6
Mana cost
{3}{G}{U}{R}
Color identity
GRU
Rarity
rare
Set
Battle for Baldur's Gate Promos
Price
—
EDHREC rank
#1404
Buy on TCGplayer
Miirym, Sentinel Wyrm card art
Miirym, Sentinel Wyrm doubles every nontoken dragon you cast after it — not a small bonus, a second copy with the same triggered abilities, meaning Bladewing the Risen reanimates two dragons and Ureni of the Unwritten digs twice as deep. The cost is six mana and no protection built in, so it either resolves into a winning position or eats a counterspell.

Best Commanders

Commanders with the highest synergy

01
Ureni of the Unwritten

Ureni of the Unwritten

77.9% of decks · synergy 0.72

Ureni of the Unwritten is the highest-synergy home for Miirym, Sentinel Wyrm because every dragon Ureni conjures triggers twice — cascading card advantage off a single attack step. Nearly 78% of Ureni decks run Miirym for exactly this doubling engine.

02
The Ur-Dragon

The Ur-Dragon

79.2% of decks · synergy 0.70

The Ur-Dragon already cheats dragon costs via its eminence ability, and Miirym, Sentinel Wyrm turns every cast trigger into two — double Ur-Dragon draws, double enters-the-battlefield effects, double the clock. Over 79% of Ur-Dragon decks include it because the redundancy is too clean to pass up.

03
Ureni, the Song Unending

Ureni, the Song Unending

15.5% of decks · synergy 0.10

Ureni, the Song Unending builds around recurring dragons from the graveyard, and Miirym, Sentinel Wyrm converts each of those recursion triggers into a token copy — turning a value engine into a board-flooding threat. Inclusion is lower here at roughly 15%, but the interaction is real when Miirym sticks.

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

Commander is the only format where Miirym, Sentinel Wyrm is doing real work — a six-mana legendary that blanket-doubles your tribe belongs in a 100-card singleton environment, not a 60-card competitive one. It's technically legal in Legacy and Vintage, but no competitive shell there wants a six-mana do-nothing-until-the-next-dragon payoff. Oathbreaker is a legal option and dragon-focused Oathbreaker builds can exploit the doubling effect, though the smaller deck size makes it harder to assemble the density Miirym wants. Anywhere outside Commander, treat the legality as a technicality rather than an invitation.

Key Combos

Combo lines featuring this card

1,938 decks
Miirym, Sentinel WyrmWorldgorger Dragon

Miirym, Sentinel WyrmWorldgorger Dragon

Infinite blinking; Infinite ETB; Infinite LTB; Infinite mana permanents you control can produce

View on Commander Spellbook ↗

Price Context

Current price

unknown tier

Current pricing data for Miirym, Sentinel Wyrm isn't available in this snapshot, so check Scryfall or TCGPlayer for the live number before buying. Given its near-80% inclusion rates in the two biggest dragon commanders, it tends to hold value — if you're building any Temur or five-color dragon list, pick it up rather than waiting.

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Sources

Mentioned

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