Frisbee, Flying Disk

{w}: Attach to Ginny, Chaser of Frisbees
{2}: equip
Whenever equipped creature attacks, put an exhaustion counter on Frisbee, Flying Disk.
Equipped creature gets +1+0 for each exhaustion counter on Frisbee, Flying Disk.
At your end step, if Frisbee, Flying Disk has 5 or
more exhaustion counters on it, sacrifice it and
tap the equipped creature. It doesn't untap during
your next untap step.