Inspiration

Immobilizing an enemy champion will cause 3 glacial rays to emanate from them towards you and other nearby champions, creating frozen zones for 3 (+ 100% of the immobilizing effect's duration) seconds that slow enemies for 35% (+5% per 10% Heal and Shield Power) (+2% per 100 Ability Power) (+2% per 100 bonus Attack Damage) and reduce their damage by 15% against your allies (not including yourself).

25s cooldown.

Swap one of your equipped Summoner Spells to a new, single use Summoner Spell. Each unique Summoner Spell you swap to permanently decreases your swap cooldown by 25s (initial swap cooldown is at 5 mins).

Your first swap becomes available at 6 mins.

Summoner Spells can only be swapped while out of combat.
After using a swapped Summoner Spell you must swap 3 more times before the first can be selected again.
Smite damage increases after two Summoner Spell swaps.

Attacks or abilities against an enemy champion within 0.25s of entering champion combat grants 5 gold and First Strike for 3 seconds, causing you to deal 10% extra damage against champions, and granting 100% (70% for ranged champions) of bonus damage dealt as gold.

Cooldown: 25-15