I kind of dig it. Gives you the ability to go for resource generation and stall. You could freeze an opposing Sunkeeper Tarim, then drop your own as a followup to negate the buff. Or as was mentioned, use it on your own taunt minions to provide a bigger shield and have another as a followup play.
I don't think it's overly powerful, but I'm intrigued by this archetype.
You can use ice elemental but seem conditional and slow to me, I hope to be wrong and slow cards be pretty good in this expansion, but aggro need to be destroyed with neutral resources to meta change in this direction, only warlock received a really good tool to deal with aggro.