This refers to revealing the top cards of your deck (however many specified by the effect) to all players, adding a specified number to your hand, and then putting the rest somewhere else, usually back into your deck
This adds a lot of value to any card that creates one of these three types of tokens, especially considering Food tokens can be a lot easier to create than Treasure thanks to cards like Sam, Loyal Attendant or Samwise Gamgee
That number best maximizes the chances of drawing one, while minimizing the chances of drawing two
This can leave your foes feeling like they cannot do anything to stop it, and, unlike something like Kira, which only protects your stuff from the first thing to target them
Kuriboh has a special place in Yu-Gi-Oh
The deck effectively functions as a strong, blue/black control deck, with a ton of different ways to generate an enormous amount of value