(Cannot combine with Two Handed Wielding)
Tank 1 - 1pp - Base Equip Armor + 10% of Base Equip Armor (+1 defense, -1 attack per every 2 mobs)
Tank 2 - 1pp - Base Equip Armor + 20% of Base Equip Armor (+2 defense, -1 attack per every 2 mobs)
Tank 3 - 1pp - Base Equip Armor + 30% of Base Equip Armor (+2 defense, -1 attack per every 2 mobs)
Changes from initial proposal are in Level 3:
50% reduces to 30% of Armor shown in #arm (all armors combined).
-1 attack per every 2 mobs put back in since an increasing negative shouldn't vanish just because you maxed it out.
Will have to teach the server to know what equipment is considered shields (might be able to cheat and use the definition of check for items in the Lefthand only and nothing in the Righthand).
Also if Anything adds to Armor, the bonus might be higher then expected since the server only tracks total Armor from everything, not from "base equip armor". That also means a mob that gets this Perk will be able to benefit from more then just what it's wearing.