Creatures with power 3 or greater don't untap during their controllers' untap steps.
"When it oscillated above a particular frequency, the stone induced acute listlessness in several researchers."
-Consulate engineer's log
Illus. Steve Argyle
MYTHICSPOILER.COM THE CYCLICAL MTG SPOILER
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KHANS OF TARKIR 
COMMANDER 2014
FTV: ANNIHILATION 
SPEED vs CUNNING 
MAGIC 2015 
CONSPIRACY 
MORE SETS
