Carbuncle.Josiahfk said:
»it's a handy build for self buffs that aren't affected by anything like reraise protectra shellra haste ice spikes etc but not worth lugging around a conserve mp build usually
Spike spells' base damage is based on INT at the cast, and equipped MAB as you are hit.
Worth noting, if for no other reason than to gear for it with existing gear.
http://wiki.bluegartr.com/bg/Ice_Spikes