There is a bug where using Snow Globe displays 75 energy is used however only 50 energy is spent upon using this ability
When against Infested, Snow Globe is best placed at choke points or around but not directly on top of the cryopod. Their tendency to swarm means that a huge number of infested enemies will quickly be trapped in the Globe making them infinitely easier to kill rather than letting them swarm the pod before they are slowed.
In update 12 Snow Globe actually has health and can be taken down by enemies when damaged enough. Making Endless Defence missions against Corpus and Grineer harder.
Avalanche stuns and knocks back enemies a small distance when cast, this may result in them being out of range for the freeze and subsequent damage, so it is important to make sure you group enemies effectively before casting.
This ability can damage enemies through walls. Using Avalanche while pressed against a wall can clear a room without even entering.
Avalanche can hit enemies who are above or below Frost's position.
Scales well against Corpus as freeze does double against shields, useful for destroying Corpus being protected by shield Ospreys.