The Band of Starpower, which is required for crafting the Mana Regeneration Band, is generally exclusive to worlds with Corruption, as it is obtained from Shadow Orbs and Corrupt Crates. Therefore, obtaining a Mana Regeneration Band in worlds with Crimson requires creating an artificial Corruption biome, e.g. by purchasing Corrupt Seeds from the Dryad in a HardmodeGraveyard. On the Desktop version, the Band of Starpower can also be crafted from a Panic Necklace, however.
In detail, the accessory has a twofold effect on mana regeneration:[1]
It halves the regeneration delay after spending mana, e.g. using a magic weapon. If standing still or having the Mana Regeneration buff, it only reduces the delay by 33.33*1/3 (33.33%).
It increases the regeneration rate by a certain value, which ranges from +2.875mana/sec to +14.375mana/sec, depending on how full the wearer's mana bar is. The exact value can be calculated by adding 2.875 to 11.5 * (cur/max), where cur is the current and max the maximum mana. The following table demonstrates this with some exemplary values:
Cur./Max. mana
Bonus regen
1 / 200 (0.5%)
+2.93 mana/sec
3 / 30 (10%)
+4.03 mana/sec
10 / 20 (50%)
+8.63 mana/sec
201 / 400 (50.25%)
+8.65 mana/sec
35 / 50 (70%)
+10.93 mana/sec
39 / 40 (97.5%)
+14.09 mana/sec
299 / 300 (99.67%)
+14.34 mana/sec
The bonus is flatly added to the natural mana regeneration. It does not matter if the player is moving or standing still.
Due to the base mana regeneration rate increasing with maximum mana, this flat bonus becomes exponentially less significant the more maximum mana the wearer has. For instance, while the bonus regen is equivalent to nearly a +650% boost at 20 maximum mana, it equals merely a +57% boost at 300 maximum mana. The exact factor for any amount of maximum mana can be calculated by dividing max+182 by max+7. The following table demonstrates this with some exemplary values:
Max. mana
Bonus regen
20
+648.15%
40
+372.34%
60
+261.19%
120
+137.8%
400
+43%
The Mana Regeneration Band does not grant a permanent increase to health regeneration like the Band of Regeneration, even though it is part of its recipe.
The bonus maximum mana capacity does stack with that of the Band of Starpower.
Trivia[]
Its mana regeneration ability works in the same way the Band of Starpower did in the Pre-Release.
↑Information taken from the Desktop1.4.0.5 source code, method UpdateManaRegen() in Terraria.Player.cs. There may be inaccuracies, as the current Desktop version is 1.4.3.2.
Desktop version, the Band of Starpower can also be crafted from a Panic Necklace, however.
version, the Band of Starpower can additionally often be found in Living Wood Chests in Living Trees in any world.
1 / 200 (0.5%)
