Mana regeneration

Mana Regeneration (also known as Mp5 or mana per 5 seconds) is a statistic that determines the amount of mana that a champion regenerates over a five second period. Each champion starts with a certain rate of base mana regeneration. This statistic scales additively; meaning that each bonus point acquired directly affects the statistic. The player can also use (a summoner spell) to restore mana.

In Dominion mode, mana regeneration is increased by 2% per 1% mana you are missing. (Twice the effect of )

Increasing mana regeneration
Sorted from greatest to least.

Champion abilities

 * increases her mana regeneration per 5 seconds by 5% of her maximum mana while stealthed.
 * increases his mana regeneration per 5 seconds by 35 / 50 / 65 for 25 seconds.
 * increases his mana regeneration per 5 seconds by 0.75% per 1% mana he is missing.
 * increases his mana regeneration per 5 by 5.

Masteries

 * increases your champion's mana regeneration per 5 seconds by 1 / 2/ 3.

Runes

 * and runes increase mana regeneration.

Neutral buffs

 * The buff regenerates 25 mana per 5 seconds and 0.5% of your max mana per second for 2.5 minutes.
 * The buff regenerates 1% of your max mana per 5 seconds for 4 minutes.
 * Crystal Scar's Aura increases every champion 2% mana regeneration for every 1% of mana missing.

Trivia
The greatest mana regeneration (per 5 sec) currently possible is 385.69 in Summoner's Rift, which requires:
 * 17.7 - base regeneration at level 18
 * 125 - 5 x
 * 15 -
 * 12 - nearby (aura)
 * 7.2 - nearby (aura)
 * 3 -
 * 10.53 - 9 x GSeals_(2).png Seal of Clarity
 * 8.9 - 9 x Glyphs_(4).png Glyph of Clarity
 * 12.96 - 3 x Quintessences_(4).png Quintessence of Clarity
 * 25 -
 * 42.4 - (+1% of 4240 mana)
 * 106 - (+2.5% of 4240 mana)
 * Without the, the maximum mana regeneration is 279.69.
 * With and, mana regeneration is increased by 175% when at 0 mana.
 * Using the, this equates to 1061 mana regeneration. Or 769 without it.
 * On Dominion: the Crystal Scar's Aura further increases this bonus to 375% when at 0 mana. This equates to 1287 mana regeneration Remember that there is no baron buff on the Crystal Scar).
 * On other champions, the total mana regeneration is 195 plus their own mana regeneration.
 * Add 25 + 2.5% of maximum mana from
 * And + 1% of maximum mana from
 * increases the total by 100%, and Crystal Scar's Aura by 200% when at 0 mana.