Nyxbloom Ancient

The effects of multiple Nyxbloom Ancients are cumulative. For example, if you have two Nyxbloom Ancients on the battlefield, you’ll get nine times the original amount and type of mana.

You’re “tapping a permanent for mana” only if you’re activating a mana ability of that permanent that includes the tap symbol in its cost. A mana ability produces mana as part of its effect.

Nyxbloom Ancient doesn’t produce any mana itself. Rather, it causes permanents you tap for mana to produce more mana. If the mana ability of that permanent puts any restrictions or riders on the mana it produces, that will apply to all the mana it produces this way.