You are the floor. Make a ruling

[Zybomb]

Preflop a Player A opens, Player B calls, Player C 3-bets, Player A 4-Bets Player B folds Player C shoves and Player A calls.

The dealer burns the top card of the blue deck of cards and the next card (what would be the first flop card) is RED

You are called over... How would u proceed?

Would any specifics alter your decision (for instance if the red card was an extra (53rd) card in a otherwise normal Blue 52 card deck, if the red card was the correct missing card in a 52 card deck etc) or would it not matter

This is the 2nd hand of the dealers push as a side note.