Alluring Suitor // Deadly Dancer (DBL) from Innistrad: Double Feature, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Justine Cruz
• Card Text:
  When you attack with exactly two creatures, transform Alluring Suitor.
  //
  Deadly Dancer
  Trample
  When this creature transforms into Deadly Dancer, add RR. Until end of turn, you don't lose this mana as steps and phases end.
  RR: Deadly Dancer and another target creature each get +1/+0 until end of turn.