I looked through the forums and couldn't really find a good answer for this.
Veradux: What is the best stats to boost for attack and heal? Roald: What is the best stat to boost for attack? Felicity: What is the best stat to boost for attack?
Honestly, I couldn't find a topic with answers. Sorry if I missed it, and this is a re-ask, but could someone fill me in?
Veradux's heal is boosted from instinct, while normal attack gains from strength. You'll barely need him do damage later in the game, but his heals are the thing that will keep you alive in most situations.
Roald gains more from strength, Felicity has attacks that use speed as component, so both will be nice, but remember that she's rather frail and will need lots of vitality.
Felicity actually uses strength for her attacks, and she has more strength than roald, who is mostly vitality. The only thing I've seen her use that's related to speed is blade dance, but that's related to the speed of the person it's cast on.
Re-Energize- Scales with Instinct and Strength (I think it's like 5 to 1, so Instinct is always better for healing.). Quick Strike- Scales with Strength. Electro Bolt- Scales equally with Strength and Instinct.
Roald:
Pyro Bolt- Scales with Strength. Greater Purpose- Scales with Strength and Vitality. Silence- Scales with Strength. Impair- Scales with Strength.