Talk:Skills/@comment-74.103.10.127-20121126033824/@comment-96.49.248.99-20121127091332

I don't have the numbers anymore, but I can verify that the effects stack on the BASE attack. You can tell from the damage on the back line cards.

So if your water card dealt 5000 damage on average, a Large Boost boost to water (+15%) will make it 5750.

If a Large boost to water (+15%) and a Great boost to water ATK/DEF (+10%) triggered, then you'd get 5000+750+500 = 6250.