Selesnya Loft Gardens (Planechase 2012) [Planechase 2012 Planes]

If an effect would create one or more tokens, it creates twice that many of those tokens instead. If an effect would put one or more counters on a permanent, it puts twice that many of those counters on that permanent instead. Whenever you roll {CHAOS}, until end of turn, whenever you tap a land for mana, add one mana of any type that land produced.