Your search for "mana reflection 237" revealed the following:
Mana Reflection (Foil) (SHM) from Shadowmoor, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Terese Nielsen & Ron Spencer Card Text:If you tap a permanent for mana, it produces twice as much of that mana instead.
Mana Reflection (M3C) from Modern Horizons 3 Commander, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Chris Seaman Card Text:If you tap a permanent for mana, it produces twice as much of that mana instead.
Mana Reflection (2XM) from Double Masters, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Chris Seaman Card Text:If you tap a permanent for mana, it produces twice as much of that mana instead.
Mana Reflection (Foil) (2XM) from Double Masters, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Chris Seaman Card Text:If you tap a permanent for mana, it produces twice as much of that mana instead.