I feel this card needs to benefit more from its 'Freeze-matters' ability - since frozen creatures can't attack or trigger abilities, you're essentially 'sacrificing' creatures to have Glacies be able to attack, so most people will ignore this ability for the most part (there are better ways to deal damage). Glacial entering play Frozen (and more expensive than Voodoo Doll/less beefy than Armagio) also means it's not a good source of damage either (3 turn windup, whereas you can Rage Pot Voodoo Doll right away or activate Gravity Pull after 1 turn on Armagio). The only advantage I feel it has over Armagio is with Catapult (24 damage vs. Armagio's 20), which makes the ability feel somewhat out of focus.
What if Glacies could attack while Frozen? It balances out Freezing your creatures by letting you have a large beatstick in their place.