Corrupted Roots

Color hosers usually attack the land base by denying mana or destroying lands outright; this one does something stranger. It leaves the enchanted Forest or Plains fully functional and instead taxes the act of using it: every tap, for mana or anything else, costs the controller two life. That is a punishment with no escape valve short of removing the Aura, because the land's owner cannot simply hold it back without also locking themselves out of their own resources. The design reads as a slow-burn clock dressed up as land disruption: against a deck leaning on a single white or green color, two life per activation compounds into a real total over a handful of turns, and the victim is the one pulling the trigger each time. It belongs to the lineage of black's hostile, color-specific Auras that turn an opponent's own land into a liability rather than removing it, a more patient cousin to the outright land destruction black has always preferred. The one-mana cost makes the math favorable for the caster and brutal for anyone whose deck cannot function without tapping the enchanted color; the narrow enchant clause (only Forest or Plains) is the restriction that keeps it from being a universal answer, pinning it to a specific slice of the metagame where green and white commitments run deep.