[Rules] Vorinclex and Mana Reflection

Vorinclex
Whenever you tap a land for mana, add one mana to your mana pool of any type that land produced.
Whenever an opponent taps a land for mana, that land doesn't untap during its controller's next untap step.

MR:
Whenever you tap a permanent for mana, it produces twice as much of that mana instead.

Both effects functionally trigger from tapping a land/permanent for mana. In theory, the owner of said triggers stacks them as they wish, of course mana abilities don't use the stack.

My ruling on this:

Vorinclex would allow the land to produce an additional mana of the color it had been designated to produce, and mana reflection would double that number. Functionally adding 4 mana to your mana pool for a single land.