Inspire/Battuta 5/5.

Group 1 is basically terrible, but best of a bad choice? 5/5 rune enchantment and lunge accuracy.

If Rake is just Gambit but for all elements, that's the only difference I see. Might be useful for enfeebs/stun, but I'll wait and see.

Personally I'd be happy to lose the counter effect of Battuta in exchange for a 3 min duration.

Edit: I wonder if the fast cast is just on native spells, or if it will work with cocoon...?