Using b2 after the reset gives you about 8% extra unbreakable damage. Depending on how much meter you & the opponent both have, you can add in ex bombs or an ex net to finish them off. And if the other player doesn't have armor (or doesn't have enough life to afford using armor) you could end with a hanging net into mixups. Check out the unbreakable combos in TonyT's video thread, there's a lot of good stuff there.