Primeape

You may sacrifice a creature named Mankey rather than pay this spells mana cost.
Trample, frenzy 3, rampage 2. (Whenever this creature attacks and isn't blocked, it gets +3/+0 until end of turn. Whenever it is blocked, it gets +2/+2 for each creature blocking it beyond the first.)
Primeape has reach as long as you control a Forest.
Whenever Primeape's power becomes less than 5, it gets +5/+0 until end of turn instead.