Mana Reflection 
Enchantment
If you tap a permanent for mana, it produces twice as much of that mana instead.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Enchantment
If you tap a permanent for mana, it produces twice as much of that mana instead.