hello friend! I've got a few quick tips to make your deck much better.
take out arcane explosion, mirror image and cone of cold. make sure your deck has 2 of frost bolts, arcane intellects, fireballs, polymorphs and flame strikes. the ancient watcher, iron beak owl combo is not reliable, take it out. Lord of the arena is a huge noob card, you can instantly tell how bad a player is by their choice of including it or not. Let your strong cards be boulderfist ogres and gurubashi berzerker. Try these changes, I promise they are better.
6
As long as this isn't silenced, it could be really strong.
7
You summon a 6-mana 6/6 for 2 mana?!?!