Running multiple earth creatures and the Gate seems inefficient. If you're going to base your play on the Gate, I think you should have a few more creatures to summon out of it, and avoid creatures that you can't summon out of it.
Many of your creatures are slow, and you only run 2 Teleports. I would run 4.
Do you need so many Perfect Strikes and Power Strikes?
I would drop an Elemental Wand for another Hurl Boulder.
I would also try to find room for some armor.
You lack control cards to neutralize big creatures. You have Quicksand, but that's pretty much it. I would diversify with maybe a Banish or a Turn to Stone, and I would probably include a Force Hold. The Force Hold can be used on the enemy mage or on a big creature, and it can let you force engagements with your slow creatures.
I would drop the 2nd Harmonize. Harmonize is efficient on spawnpoints and familiars, but putting one on Huginn makes killing him too efficient for your opponent. If you want to improve your mage's channeling, Moonglow Amulet is a better option.
Overall, you seem to lack defensive options. You don't have any Blocks, Reverse Attacks, or Agonies, which is in addition to your lack of armor and control options for big creatures.
