I initially developed this just for my alliance, but I think it might be helpful for everyone. I made a chart showing the useful mana bonus percentages for every mana speed! The mana bonuses shown will decrease the number of tiles it takes to charge hero special abilities. There are different percentages that are useful for offense and defense.
Here’s the information I used to make this chart:
Offense: Mana charges in two ways. When tiles hit opponents, you get “1 tile” worth of mana. When tiles miss opponents, you get “2 tiles” worth of mana.
Defense: Mana charges in two ways. When a turn finishes, defense heroes get “1 tile” worth of mana. When a tile hits your defense heroes, you get “0.5 tiles” worth of mana.
Another thing to note is that hero mana speeds are defined by how many tiles it takes to activate them. Here are those classifications:
Very Slow: 13.5 tiles
Slow: 12 tiles
Average: 10 tiles
Fast: 8 tiles
Very Fast: 6.5 tiles
If you combine all this together, you can figure out the mana bonus needed to reduce the number of tiles to charge your special abilities. (You may notice that it’s easier to improve performance of defense teams. This is because you only have to reduce “half a tile” worth of mana to see performance improvements, as opposed to “a whole tile” worth of mana for offense.)
Let me know if you have any questions or suggestions for chart improvements.
Shameless alliance plug. Motivators Madness is the best!
EDIT: @Garanwyn caught an error where I used 14 instead of 13.5 tiles for very slow heroes. I updated everything accordingly.