[Sombre]

Because if it's a spell you have to cast in order for drakes to ever be worth it, then there's no reason not to have a spell with the same requirements that just summons the drakes.

I agree with the concept of a single drake early being good while three drakes later is also equally good and fair. But it just doesn't work out that way. I don't think that balance is possible to strike. You either make dragon master too good, or single drake summons too bad.