I just got smn to 54 last night and unlocked ruin III. (I'm posting these numbers from memory so I might not be 100% accurate) Its like 120 potency which is nice but like 500 mp. Ruin 1 is only 80 potency but only about 50 some mp. With such a high cost for another 40 potency it doesn't sound viable for a long fight but I don't have dread wyrm trance yet. Maybe when I unlock that I'll have mp to burn.

Any ideas?