"The hooves of the Raze-Boar will trample the weak—and their city—to dust!"

Nikya of the Old Ways

You can't cast noncreature spells.
Whenever you tap a land for mana, add one mana of any type that land produced.

Ravnica Allegiance Promos

Ravnica Allegiance

If you tap a land for more than one mana, you choose one type that was produced and add one mana of that type.

Nikya doesn’t care about any restrictions or riders your lands put on the mana they produce, such as those of Unclaimed Territory and Guildmages’ Forum. It just produces one mana of the appropriate type, with no restrictions or riders.

The types of mana are white, blue, black, red, green, and colorless.