Ritual of Subdual [Ice Age]

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
If a land is tapped for mana, it produces colorless mana instead of any other type.

“That which does not bend to the will of Freyalise shall surely break.”
—Kolbjörn, Elder Druid of the Juniper Order