Hearthstone Mercenaries

Frost Volley 3

Frost Volley 3
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Passive: Whenever your characters play a Frost ability, cast Icicle 3 at a random enemy.

Mercenaries

Lokholar the Ice Lord
The Lich King
Jaina Proudmoore
Khadgar
Varden Dawngrasp
Zar'jira, the Sea Witch