After testing The battle sprites, I have 3 complaints:
1.) The skills, the cool down is too big to make battle sprites effectively used in combat, even when fully upgraded, I think it sould be cut in half, also, separate the cool down meters.
2.)Heat, after a certain level (around 15 I think) it is almost impossible to heat up the sprite, decrease the value needed to heat them up.
3.) Damage, yes, in T1 they may seem overpowered, but in T3 they are totally useless, a fully upgraded firebolt (the dragon's first skill) only deals 40 damage in T3 making it useless, I say buff the Damage or make it increase more with higher levels.
Also some other minor observations:
1) The cat sprite is useless, the beam is week and has a minimal area of effect, the ''Heart Attack'' isn't helping anything, and you can't use the actual defense ability until a very high level. Diffidently Needs a buff or total rethinking of every ability.
2)The phantom is all good round, I think some value increases can help but nice work here!
I agree on the first point. The cool downs are to hight and should be seperate. the 1st skill does need to much of a decrease in cool down but the 2nd skill needs atleast 20 sec less cooldown. Also concerning the damage it is kinda useless in T3. I also agree with the point of the cat sprite. It is extremely cute but the 2nd skill does nothing.