Pishara, Inventor of Light

Origin (as long as Nishara, Inventor of Light is in your hand or command zone, life cannot be gained)
{w}: Up to X target creatures gain first strike.
{w}{t}: Up to X target creatures gain double strike.
{w}{ut}: Target player that has not been targeted by this ability this turn exiles half X creatures they control.
And when she could not see what she had achieved, she made sure she saw it...