Most ethical people would try to only play with actual cards, of course, but if it becomes truly impossible to tell them apart in a tournament setting, the lines will start to blur
Play Boosters are balanced for Limited play, perfect to open just for fun, and contain at least one foil card and one Retro frame card
Card Name Mana Cost Type Artifact Creature Sphinx Rarity Uncommon rules Text Affinity for artifacts (This spell costs less to cast for each artifact you control.) FlyingCascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card with lesser mana value
To make them have a four-color identity, all they would need to do was have an off-color activation using the fourth color
The only real combo was Channel + Fireball , but a good lockdown control deck was nearly impossible to beat (besides the fact that Channel was one of the first non-ante cards ever banned, because it was too easy to win with it)