Aside from the +25 Primary Stat Boost, +15 to all other stats and the 12% Crit, the other two modifiers are meh.

12% Damage is useless if you have an elixir or step into a Rogue's Veil buff based on the single modifier rule. And lol@HP Regen. Just as useless as Mana Regen.

Can't comment on the AA and Passive ability till I see it in action.

Oh and also, fix Singe, lolwut.