Uno

Uno is an ancient mystical power which is imbued in very little beings. it has many powers like reflecting anything or cloning your self. It spouts from the ancient altar of Uno, which has been lost to time for millenia. The most known way to use this power without inheriting it is with the use of the Uno cards.

Big Chungus from the HELLO THERE timeline was able to manifest this power on his own in his dying breaths to defeat Shaggy. Big Chungus from the main universe and all the other Big Chunguses were able to combine their powers, thus obliterating all but the main Big Chungus and his universe, to win against The Dark One.

Uno Cards
Uno Reverse Card - Can reflect anything.

Uno plus Cards - Most commonly +2 or +4. but if you have the power of Uno, you can infinitely increase the amount, but it is very draining,

Uno skip Card - Can be used to pause time for any amount of time you like. These were all destroyed by ancient Chungi for unknown reasons.