Get-out order
Frost Nova when a target reaches melee. Walk back two body lengths before the next cast.
Blink when Nova breaks early or an add reaches you, after checking the landing ground before the pull.
Cold Snap returns Frost cooldowns. Use it when the first answer does not solve the room.
Ice Block buys ten seconds. Cancel with a clear route before the mobs recover.
Bad exits
Blinking into terrain can send you into a wall, a ledge, or the pack behind you.
Even when
Frostbolt is almost finished, do not stand in melee to finish the cast.Use
Ice Barrier to create room, then move out of melee before the shield disappears.
Polymorph the second mob before it joins. Do not sheep the mob already hitting you.
Dungeon calls
Wait for the healer to drink before the next pack.
If a Rogue opens before sheep, mark the second mob before the next pull.
When the tank collects a caster pack,
Counterspell stops one cast at a time.
Leave now
Leave the pull if Nova breaks early and Blink is down.
Leave the pull when two casters reach range after Counterspell.
Leave the pull if Ice Block ends and cooldowns stay down.
Reset before the next pull when mana falls below 20% with the pull open.