Do 3 damage to a Space unit, and Saw doesn't count toward controlling any arena until end of turn. Play only during your build step.
Pay 2 Force Redirect, and if a Dark Side unit was damaged this turn, Saw can't be attacked again this turn.
Keywords
Redirect
Redirect: An activated ability that means, "If this unit is attacked, choose one of your other units that can be attacked and damaged in this arena. The attacking unit attacks the chosen unit instead." Precision will cut through Redirect just as it cuts through Intercept. However, there are cards that can cause a unit to lose Precision, or part of its game text.