Frozen Heart

Stats

Values as the League of Legends Wiki's item data lists them, for every mode; the data doesn't state their units.

Effects

• Winter's Caress (unique): Cripple the attack speed of enemy champions within 700 units by 20%.³

Arena changes

• Ability haste changed to 15.
• Armor changed to 90.
• Mana changed to 450.
• Winter's Caress attack speed slow changed to 30%.⁴

• After team switches, the debuff can affect a team even when no champion in that fight has Frozen Heart, if an enemy on another team has it.⁵

Earlier formats

• Frozen Heart does not affect champions immune to slows.⁶⁷⁸⁹ 8x2 duos
• The Frozen Heart attack speed slow sometimes fails to apply to nearby enemies; in some rounds, a training dummy's attack speed stays unaffected, and an Olaf's attack speed remained unchanged while nearby.¹⁰ 8x2 duos
• Frozen Heart could be worth buying alongside Randuin's Omen even when their effects overlapped, because the other benefits of each item still mattered.¹¹ 8x2 duos
• Frozen Heart could provide value even when it did not reach its full value.¹² 8x2 duos