Sweeten

Sweetening your Candy improves the buffs from ALL your Candy cards’ abilities by +1/+1.

The card Gum Drop next to the Candy Counter at 1, gaining another +1 sweetness.
Gum Drop Sweetens your Candy (along with giving a sweetness-improved buff).

For example, Gum Drop normally buffs a character by +1/+1. If your Candy is sweetened to 4, it gives +5/+5 instead.