Infernal/ocean drake should be removed
Not because they are stronger or weaker than the others, but because they do not require skill to use their strengths while the others do. The power of those two drakes do not require players to change anything about play style to utilize them well.
The concept of ocean drake might be salvable but it current version is just too passive and is the definition of invisible power along with it becoming insignificant the longer a game goes.
A drake that affects vision should replace infernal. Something that could strengthen without doing so directly as the rest of the drakes do.