This one's for catching.

BUILD PATH Catalyst of Aeons + Hextech Revolver + 850 gold ⇒ Lost Chapter + Hextech Revolver + 850 gold

MANA 400 ⇒ 500

REMOVED HEALTH No longer grants 300 health

REMOVED ETERNITY Restore mana equal to 15% of damage taken from champions. Restore health equal to 20% of mana spent, up to 15 health per cast, while toggle abilities can heal for up to 15 per second.

NEW COOLDOWN REDUCTION 10%

NEW UNIQUE PASSIVE Haste: This item gains an additional 10% cooldown reduction

LESS FROSTY Frost Bolt now only damages and slows first unit hit (per missile)

LONGER WINTER Frost Bolt slow decays over 0.5 seconds ⇒ 1 second

STRAIGHT AND NARROW Frost Bolt cone narrowed by 10 degrees. Frost Bolt cone range increased by 200

FROST BOLT SLOW PERCENT 65% ⇒ 40%