Each of your opponent's activated abilities that cost 0 or more Force costs 1 additional Force to play.
Pay 4 Force, discard one of your units from any arena Gain control of one of your opponent's units in the same arena with equal or less build cost until end of battle. Play only during your build step.
Pay 1 Force Evade 2
Sidious's first ability does not increase the cost of activated abilities that do not have a Force cost. However, while there are Nexu in play, Sidious's ability extends to all activated abilities affected by those Nexu.