Mana regeneration

Mana Regeneration (also known as MP5) is a statistic similar to health regeneration which determines the amount of mana a champion regenerates over a five-second period. This happens in half-second intervals. Each champion that uses mana starts with a certain base rate of mana regeneration, which increases by a small amount at each level-up. It can be further increased by a variety of items, abilities, masteries, runes and neutral buffs, as detailed below. Mana regeneration stacks additively, meaning that each bonus point acquired directly affects its statistic. This is true whether the bonus is a flat value or percentage-based

Gold Value

 * Flat Mana Regeneration has a gold value of per point.
 * Percentage Mana Regeneration has a gold value of per point.

Champion abilities

 * regenerates every second while stealthed.
 * increases his mana regeneration by for 25 seconds.

Masteries

 * restores every 5 seconds.

Neutral buffs

 * The buff regenerates 25 mana per 5 seconds and  per second for 2 minutes.
 * The Crystal Scar's map-wide buff grants 2% bonus mana regeneration for every.
 * The Howling Abyss' map-wide buff grants bonus mana regeneration equal to.
 * The Twisted Treeline's map-wide buff grants % bonus mana regeneration for every.

List of champions' mana regeneration
Mana regen Manaregeneration Regeneración de maná Régénération de mana Regeneracja many Восстановление маны 魔法回复