Xaxeki-uru

Galvanic (When this creature deals damage to another creature, flip a coin. If heads, tap that creature. It doesn't untap during it's controller's next untap step.)
When Xaxeki-uru enters the battlefield, tap two target creatures. They don't untap during their controller's next untap step.
"Thunder is noise- a tool of fear, lightning is the true harbinger of lethality."-Deltosian Proverb