Heart of Ice
Designate 1 hero and freeze it. After combat, it transforms into a random hero 1 tier higher and retains its level.
Designate 1 hero and freeze it. After combat, it transforms into a random hero 1 tier higher and retains its level.
On rounds 5 and 8, gain 1 Deep Freeze. Choose 1 of 3 random enhancements.
Choose 1 of 3 bonuses: Frost Tide grants your highest-level hero 1,200 health and 120 Physical Attack and Spell Power at combat start; Immortal Ice grants all allied heroes 500 maximum health and 60 Physical Attack and Spell Power; Blizzard Moment makes frozen heroes permanently gain 20 levels after thawing.