上古龙卫米瑞穆 (Miirym, Sentinel Wyrm)
传奇生物 — 龙／精怪 · {3}{G}{U}{R}
飞行，守护{2}
每当另一个非衍生物的龙在你操控下进战场时，派出一个衍生物，此衍生物为前者的复制品，但如果该龙是传奇，则此衍生物不是传奇。
- 最常用的 300 位指挥官
- Ghalta, Primal Hunger
- Giada, Font of Hope
- Y'shtola, Night's Blessed
- Muldrotha, the Gravetide
- Vivi Ornitier
- Tatyova, Benthic Druid
- Etali, Primal Conqueror
- Korvold, Fae-Cursed King
- Niv-Mizzet, Parun
- Urza, Lord High Artificer
- Chatterfang, Squirrel General
- Sheoldred, the Apocalypse
- Teysa Karlov
- Atraxa, Grand Unifier
- Meren of Clan Nel Toth
- Kinnan, Bonder Prodigy
- The Gitrog Monster
- Kenrith, the Returned King
- Sythis, Harvest's Hand
- Queen Marchesa
- The Scarab God
- Krenko, Mob Boss
- Omnath, Locus of Creation
- Esika, God of the Tree
- Animar, Soul of Elements
- Kykar, Wind's Fury
- Magda, Brazen Outlaw
- Isshin, Two Heavens as One
- Omnath, Locus of Rage
- Aesi, Tyrant of Gyre Strait
- Brago, King Eternal
- Atraxa, Praetors' Voice
- Yarok, the Desecrated
- Morophon, the Boundless
- Ureni of the Unwritten
- Veyran, Voice of Duality
- Grand Arbiter Augustin IV
- Shorikai, Genesis Engine
- Jodah, the Unifier
- Sisay, Weatherlight Captain