Cheat

Divination cantrip
Casting Time: 1 bonus action
Range: Self
Components: S, M (a weighted die)
Duration: 1 round
You subtly twist your fingers and fate seems to follow
suit. For the duration, you can reroll any ability
check you make to play nonmagical games of skill.
Therefore, this spell could influence a game of poker,
but not the result of a deck of many things.