Fimbulwinter is a legendary item in League of Legends. Fimbulwinter costs 2700 gold and grants 400 Health, 860 Mana, 15 Ability Haste and Unique Passives (Awe, Everlasting).
+15 Ability Haste
Unique - Awe: Gain bonus Health based on Mana.
Unique - Everlasting: Immobilizing or Slowing an enemy champion grants a Shield. The Shield is increased if more than one enemy is nearby.
Limited to 1 Mana Charge item.