Jungle Parasite

Bestow on Player {4}{b}{b}
{t}, Pay 1 life: Add one mana of any color.
Activate only if Jungle Parasite is a creature.
Whenever a nonbasic land controlled by
enchanted player would produce one or more
mana, it produces that much colorless mana
unless enchanted player pays 1 life for each mana
it produces.