![Mercurial Geists [Mystery Booster]](http://eternalmagic.cc/cdn/shop/files/75b3b292-026b-575f-a678-18e37e63f3c7.jpg?v=1737849861&width=800)
Mercurial Geists [Mystery Booster]
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| Set: | Mystery Booster |
| Type: | Creature — Spirit |
| Rarity: | Uncommon |
| Cost: | {2}{U}{R} |
Flying
Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn.
Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn.
"Procedural misstep: provocation of geists for the purpose of yielding more energy can compromise containment units. Next action: clean up mess."
—Laboratory notes
