Cosmium Blast 
Instant
Appears in 69 of 15,597 decks (0.4%).
Appears with these commanders:
| Commander | Decks | Synergy ↓ |
|---|---|---|
| Akiri, Fearless Voyager | 1 | None |
| Alharu, Solemn Ritualist | 1 | 1.0 |
| Stormwild Capridor | 9 | 0.69 |
| Prava of the Steel Legion + Keleth, Sunmane Familiar | 1 | 0.33 |
| Sunrise Cavalier | 1 | 0.2 |
| Seedglaive Mentor | 1 | 0.14 |
| Markov Purifier | 1 | 0.12 |
| Ondu Knotmaster // Throw a Line | 1 | 0.12 |
| Plumecreed Mentor | 1 | 0.12 |
| Psemilla, Meletian Poet | 1 | 0.11 |
| Lulu, Loyal Hollyphant + Guild Artisan | 2 | 0.08 |
| Jem Lightfoote, Sky Explorer | 1 | 0.08 |
| Loyal Unicorn | 1 | 0.07 |
| Starseer Mentor | 1 | 0.07 |
| Patched Plaything | 1 | 0.07 |
| Wilson, Refined Grizzly + Veteran Soldier | 1 | 0.06 |
| Amber Gristle O'Maul + Veteran Soldier | 1 | 0.05 |
| Gary Clone | 1 | 0.05 |
| Shay Cormac | 1 | 0.05 |
| Caparocti Sunborn | 2 | 0.04 |
| Danitha Capashen, Paragon | 2 | 0.03 |
| Wispdrinker Vampire | 2 | 0.03 |
| Aven Wind Guide | 1 | 0.03 |
| Cleric of Life's Bond | 1 | 0.03 |
| Bastion Protector | 1 | 0.03 |
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