seyren
Keep in mind that icewall combo does drains almost half your hp. If you want a sorc that would put a strain on your sp even more. If you really insist on a summoning class, go necro. Not only their summon doesnt consume SP, they dont time out so they stay there as long as they are not killed. If you think damage is a bit lacking, then throw one pyro in the mix. PP on fireball is good as well.
elfochka
Freezing sphere is a decent ice skill that behaves almost identical to ice bolt, it’s quick casting, double hit, decent AoE and three overheat charge and decent cooldown so it’s good at cleaning left over mobs and a skill to use in between your large cooldown skills.