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Also, try to NOT USE GEMS ON FINISHING UPGRADE NOW, it will only waste your gems when you could use it on something more important like adding new slots, buying, etc.Face Gorgona in the Misty Island to pick up the Arcanist set or run some Trials to acquire these items. Every set has a specialised build with different bonuses and sometimes special gear effects, which will greatly improve your attribute values. Tank Companions, such as Marcus and Norgrim, will keep bosses away from you, enabling maximum damage output. When going head-to-head with Bosses with your Mage, your Companions don't play as huge a role as with Warrior or Bounty Hunter, but you'll still find them very useful.Just switch it out with Fireball and you'll be good.
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I also recommend Frostbolt if you specifically want to target a enemy.
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Just make sure you have your Arcane bolts at level 10 in order, when using Blink there, your damage will be twice as good. They won't be able to attack you and this can make your fight very easy. A good strategy is to go far enough away from your enemies so you're not in their firing range and just spam Arcane Bolts. Arcane Bolts are way strong for the bosses in combination with Blink and Vortex.
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