When Unnerved Stormtrooper enters the battlefield, an opponent gains control of it. It cannot attack you for as long as it remains under that players control.

Whenever a creature you control dies, transform Unnerved Stormtrooper and gain control of it.

Armed 3 — {2},{T}. ({2},{T}: Finn deals 3 damage to any target.)

At the beginning of combat on your turn, you may untap another target creature you control, then draw a card.