Balance, Arrow, Spear, Lord = 3% - 6% dmg buff on target player, respectively

Bole, Ewer, Spire, Lady = 6% - 10% crit buff on target player, respectively

There, problem fixed Jokes aside I do prefer the 4.0 version with the RR and buff timer manipulation and aoes. They could have kept the same system but changed it so that the cards only give beneficial effects like dmg, crit or even DH similar to the example I just gave. Personally I hope they do make an aoe bubble with the cards. Like if you draw a Balance you can set it on the field face up and everyone in that bubble gets the buff. Alternatively, you can also place a card face down and it will grow stronger in strength similar to earthly star and once the timer expires, everyone in range will get a the Lady/Lord version of the buff. If this sounds like Yugioh well take a look at the original AST weapon concept.