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You can only use this effect of "Masquerade the Blazing Dragon" once per turn

Color Requirements | To use an Option card, players must have a Digimon or Tamer in their battle area or breeding area that matches the color of the Option card.

For aspiring Judges, the Comprehensive Rules (section 702.53) provide even more detail for the ability

As the twelfth most popular five color general, Ramos has a unique flavor to their decks, since they want you to play spells with as many different mana symbols as you can

But perhaps the lesson should have been learned here: many of the cards don't need to be reskinned simply to generate revenue for Wizards