League of Legends Reforged Rune: Phase Rush

Hitting an enemy champion with 3 attacks or separate abilities within 4 seconds grants ranged champions 18.75-37.5% movement speed, which is increased to 25-50% for melee champions (depending on level) and 75% slow resistance for the duration.

Duration: 4 seconds
Cooldown: 30-10 seconds (depending on level)