Stock Medic

At the beginning of each upkeep, put an
Ubercharge counter on Stock Medic. (A creature cannot have more than four Ubercharge counters.)
{t}: Target creature gets +0/+2 until end of turn.
{t}, Remove four Ubercharge counters from
Stock Medic: It and target creature you control
gain hexproof and indestructible until end of
turn.