Cannon, the Canon Cannon

{t}: Deal 2 damage to target creature you control
or opponent. If you target a creature, that
creature gains haste and flying until end of turn.
Remove all counters from this card.
{5}, {t}: Tap and create a copy of target creature
you control. Put a Jam counter on this card.
Whenever a creature enters the battlefield under
your control, if this card doesn't have any
counters on it, {ut}