What does each Booster do?

There are 3 types of Boosters.

Pop, which is rewarded for a streak of 4, removes one random card from the board.

Spray, which is rewarded for a streak of 5, turns one random open card on the board into a “mono-color” card, which allows you to remove it with any card of the same color from your deck.

Blast, which is rewarded for a streak of 6, removes all open red or black cards on the board.