Jawa Splicers

At the end of your turn flip a coin, if you win the coin toss untap target artifact creature you control, if you lose the coin toss sacrifice an artifact creature.
{1}{t}: Untap target artifact creature you control.
{r}{r}{t}:Gain control of target artifact creature until the end of the turn. Untap that artifact creature, it gains haste until the end of the turn.
{u}{u}{u}{u}{t}:Gain control of target artifact creature , it does not untap during your untap phase.