You can find card Buff Editor in Card Stats page and Custom Buff page.

In stats page, only light blue cells are clickable.

And in Custom Buff page, blue and yellow are clickable.

In this game, we have Team/Club Buff and Passive Effect Buffs (like link, bond, etc).

[In game stats] = [card stats] * (1 + [team/club buff]) * (1 + [passive effect buff]).

We have table below.