Undercity Sewers (Borderless) (20) (PZA)
Non-Foil - NM
Not Buying
![Mercurial Geists [Mystery Booster]](https://cdn.shopify.com/s/files/1/0267/9501/6251/files/75b3b292-026b-575f-a678-18e37e63f3c7.jpg?v=1737817661)
Mercurial Geists [Mystery Booster]
| Set: | Mystery Booster |
| Type: | Creature — Spirit |
| Rarity: | Uncommon |
| Cost: | 2UR |
| Colors: | RU |
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