Considering the following: 

 - Mana abilities come in two forms, Activated and Triggered
 - [Nyxbloom Ancient][1]/[Mana Reflection][2] only works with Activated abilities of a permanent being tapped
 - Triggered abilities like [mtg:Utopia Sprawl] and [mtg:Nikya of the Old Ways] don't work with this ability. 
 - Abilities that tap other permanents like [mtg:Urza, Lord High Artificer] or [mtg:Heritage Druid] are mana abilities that tap permanents but do not get multiplied with Nyxbloom Ancient*
 - Replacement effects like [mtg:Liliana of the Dark Realms] making swamps tap for BBBB get multiplied by Nyxbloom Ancient but overwrite the cards original mana ability. 

Similar to the way [mtg:Winding Constrictor] does X counters + 1, versus [mtg:Doubling Season] X * 2, are there any effects that modify the amount of mana produced by a source, aside from the mentioned Nyxbloom Ancient and Mana Relfection? 

Based off <a href="https://boardgames.stackexchange.com/questions/49897/how-much-mana-does-tapping-a-forest-make-with-nikya-of-the-old-ways-nyxbloom">this</a> question.


  [1]: https://www.magicspoiler.com/mtg-spoiler/nyxbloom-ancient/
  [2]: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=146750