Boar Vanguard

When you cast Boar Vanguard, create a 3/3 green Boar Soldier creature token with trample.
Boar Vanguard enters the battlefield with three reinforcement counters. Whenever you are dealt combat damage remove a reinforcement counter and create a 3/3 green Boar Soldier creature token with trample.
When there no more reinforcement counters on Boar Vanguard, exile it.