Kinnan, Bonder Prodigy
Ikoria: Lair of Behemoths — mythic
Legendary Creature — Human Druid
Kinnan, Bonder Prodigy rulings:
2020-04-17: You’re “tapping a permanent for mana” only if you’re activating a mana ability of that permanent that includes the symbol in its cost. A mana ability produces mana as part of its effect.
2020-04-17: The types of mana are white, blue, black, red, green, and colorless.
2020-04-17: The additional mana is produced by Kinnan, not by the nonland permanent that you tapped for mana.
2020-04-17: Kinnan doesn’t care about any restrictions or riders the nonland permanent put on the mana it produced. The additional mana Kinnan produces won’t have any restrictions or riders.