Gracious Commander

Autonomous -- Put a +1/+1 counter on another
creature you control (This creature can't attack or
block. At the beginning of each opponent's upkeep, that
player may put a +1/+1 counter on another creature
you control. If they do, they gain control of Gracious
Commander and untap it.)
At the beginning of your combat phase, if
Gracious Commander is untapped, up to X target
creatures you control get +1/+1 until end of turn,
where X is Gracious Commander's power.