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
Illus. Lake Hurwitz
1/3
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KHANS OF TARKIR 
COMMANDER 2014
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MAGIC 2015 
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