How to pilot
Try and start Evee if you can so you can find a friend and evolve into leafeon. Worst start is going first with heracross, second with heracross is not so bad. Try and get two energy on leafeon, one is fine, but then you will need xspeed/leaf for future pivots. Once you have leafeon and at least one heracross on your bench(or in hand), use leafeon to immediatley charge up heracross. Then pivot with leafeons built up energy and swing with heracross. Playing heracross on the same turn can be great for catching an opponent off guard. If you get both heracrosses then you can keep doing this when one gets low or you cant heal them. just retreat, use leafeon to swing for a turn, than bring out a fresh heracross on the next turn. Try and heal up your heracrosses when they are on the bench to bring them back out for a fresh attack.