Hydras is a BAD idea, because, unless the calculations changed, SD / SBK doesn't put % cards into it's calculations.
No, one of the more common, and popular combos, is to use a +10 Quadruple Diligent Blade [ Zipper Bear cards. ] This adds a fair bit of additional attack, and is the only real way to use cards to add power to the attack. There was one sword that could give +2 INT, which only has two slots but is imensly useful for this, but it's name was odd and I don't feel like looking it up. xD
However, ALWAYS put the Ice Pick in the shield hand. The attack of the weapon isn't actually included in the damage calculations. Only it's cards and / or affects are. Again, this might have changed, but I doubt it. o.o
