Lots of people are saying that they did Grizzleheim at level 20 and some say at way higher levels. I just want opinions on what level you think would be reasonable to start Grizzleheim.
It depends on your school and skill level. Personally I wait for all my wizards until after level 30 because until you get close to level 35 for your spell, there's really no reason to even visit Grizzleheim. The rewards and XP are just too low.