Anbo

Used as a noun or adjective. Describes a system where one's input of a token, action and or currency will result in a return of different results (physical, verbal) varying in chance (rarity).

Notes: The Anbo system is very similar to the Gacha system found in many games. Although Anbo more variety of uses, not just being used as a noun. The words Anbo and Gacha can be used interchangeably.

Adjective: This Anbo key might give my something great.
Noun: I'm gonna do this. I don't even care if it under an Anbo.