Attacking - Click anywhere when the attack meter turns green. Defending - Click anywhere when the snowball is on the lightning bolt. Healing - Wait for the Heal Star to turn completely red, and then heal.
So I tried to make a fun RPG battle system by keeping it simple and uncomplicated. Similar to the Paper Mario and Mario & Luigi games, there is a small bit of interaction beyond just choosing what do do on your turn. Is it any good? Do you want to remix it? Leave feedback in the comments because I really want to hear it.