Speedslinger

Armor 1(This contraption enters the battlefield with one Armor counter on it. When you receive combat damage, remove an Armor counter from this contraption. If there are no Armor counters on it, destroy it.)
{t}: Exile target creature you control, then return that card to the battlefield under your control. It gets +1/+0 and gains haste and flying until end of turn. At the beginning of the end step, sacrifice it.