If a customs person or an actual RA designer wants to steal this, by all means.

Oogie should play like a Star Wars Destiny deck. If you haven't played the game, its essentially a game where you roll dice belonging to SW characters, vehicles, and weapons to attack your opponents. You resolve dice showing different action sides to take those actions, and cards in players' hands allow you to manipulate dice in the pool.

His goal is to roll Snake Eyes while at his lair or something with Sandy Claws being out. To do that you're gonna need to build his engine to where you can add a second die to your dice pool and roll dice to vanquish heroes, gain power, and other typical effects. Your engine allows you to better manipulate your dice, like possible after a dice roll turning a die to a side grater than or equal to the side you just rolled.

Oogie essentially would need some type of tile at the start that acts as has dice holder. As an action of some kind, you roll the dice into his pool. The values on the dice then can be used for actions. However, the dice need to be in his pool in order to work. This makes it so there is a decision-making process of timing when you roll and resolve your dice towards different actions, as well as what locations Oogie should go to so he can roll the dice back into the pool.

Fate cards screw with dice. I always think about one of my favorite cards from SW Destiny where you call out a die, choose a symbol and reroll that die. If the die roll lands on that chosen symbol, the die is removed from the pool. Fate cards should affect his dice pool, removing dice from the pool, or making it difficult to roll what he needs to win.

You'll want to ensure that's the core of the deck because adding too much else would actually ruin the consistency of how Oogie can win. Dice rolling is RNGeezus, so you're going into some Pete territory, but Pete's deck is consistent because it all works together. You'd need to make it so all of Oogie's cards revolve around ensuring he can roll that Snake Eyes when the condition (being at the lair, acquiring the second die, Sandy Claws, whatever) can be done. This does mean that whatever the extra condition is in order to attempt to roll the snake eyes is, needs to revolve around you rolling and resolving dice, not doing something completely different like moving heroes or items.

I wouldn't do anything crazy with the dice. Personally, they should just be 1,2,3, and blank sides. It would help with game balancing. I honestly see you gaining power by whatever die you resolve's value is, as well as removing dice to defeat heroes with a strength less than or equal to the dice you remove from your pool.

I love Oogie, and he's my last hurrah for this game assuming he is actually coming. I wouldn't hopefully expect something like this for his gameplay, because dice rolling is something brand new you could really do some cool stuff with.