Gwint_dnd_system.rar -

Grant passive abilities or allow for rerolls under specific conditions.

Cards are used to manipulate these rolls. For example: gwint_dnd_system.rar

A standard homebrew deck often consists of nine base unit/ranged cards and one "Leader" card that determines the player's faction. Faction Examples in D&D Grant passive abilities or allow for rerolls under

Force an opponent to roll with disadvantage or subtract a penalty (like a d4) from their total. gwint_dnd_system.rar

Users on the r/DnD and r/gwent subreddits frequently share PDFs and spreadsheets of these rules.

Homebrew threads often contain links to simplified versions for 5E.