hey ive been playing for a while but i quit for about 6 months now i have started and need a killer battle damage in defense deck..please.

So... you want cards like Stone Statue of the Aztecs right?

If you're focusing on defense cards, get ones like Necro Gardna or Dawnbreak Gardna. You most likely could include a Cyber Dragon or 2 because you can summon them easily and they can provide protection from basic monsters your opponent summons.