Its nice when you flesh to stone a target, while arcane supremacy procs, and BAM! 15-20k on crit depending on how your spellpower is doing.
All this for ~110 spell points.
In the meanwhile Fury of the Wild can produce 4x15k+
so, in my book ruin is good, and only little short of great. Ruin hits around 3,5k on a non crit with my 450 spell power + max + emp. Imo Not worth the mana when i can produce this much dmg with 2-3 average shirady missile for 10th the spellcost.
The thing I like about it is its untyped damage and not direction sensitive.
Yes it is expensive spell point wise, but regardless of your elemental focus, it is a solid fallback spell.
Argo: Degenerate Matter - 200
Jotmon (HC 34/45 , RC 42/42 , IC 12/21 , EC 51/51 , RP 116/158)
Jotlock (HC 38/45 , RC 25/42 , IC 15/21 , EC 51/51 , RP 75/158)
Whatthetruck (HC 38/45 , RC 42/42 , IC 15/21 , EC 51/51 , RP 111/158)