Each (with the Druid Heritage) and certain upgrades will provide small increments of Max Mana.
Because your Reincarnation level and total Trophies add a variable amount of mana, there is no "one size fits all" building count. Instead, follow this logic:
Except for those that increase mana based on building count (unless necessary). Check Your Total: Look at your current Max Mana. Use the "Mana per Building" Math: mana matrix realm grinder guide
Watch out for the Well-Read trophy or Research traits that increase mana based on "Total Spells Cast." If your mana is slowly rising while you sit there, you have a scaling upgrade active. Try to finish the trophy quickly before the number moves.
The (Research) or specific Building Upgrades can be toggled. Each (with the Druid Heritage) and certain upgrades
Before fine-tuning, buy the "standard" mana boosters that don't scale wildly: Increases max mana by 300. Mana Binding (Wizard 3,2): Increases max mana by 200. Professionalism (Druid 3,2): Increases max mana by 300. 3. The "Exact Number" Strategy
You don't want spells firing off and potentially triggering secondary effects. Check Your Total: Look at your current Max Mana
If you are at 4,748 or 4,749, check if you have any upgrades that scale with time. Sometimes waiting 10 minutes will naturally tick your mana up to the required 4,750. Conclusion