Each weapon card allows for a potential to increase the player's damage towards enemies, which will vary depending on rarity. They also have a Mana requirement before being able to be used. Unlike amour, the buffs are set to provide buffs dedicated to offensive aggressive play.
It will also depend on the weapon type. Each weapon will have their own specific buffs.
A card will also have their own rarity and will have a set damage increase. These will vary from the following:
-Small increase to Damage (Common)
-Medium increase to Damage (Rare)
-Large increase to Damage (Legendary)