Devoted Puppeteer

Masquerade 3 (When Devoted Puppeteer
enters the battlefield, you may pay 3 life.
If you do, it gains a type or an ability
of target creature an opponent controls.)
{2}{b}{t}: Gain control of target creature
until end of turn. Untap that creature.
It gains haste until end of turn. If that
creature would die this turn, sacrifice
Devoted Puppeteer.