Proteus #9

Proteus is a sea‑dweller who could change his shape at will. Some call him the son of Poseidon, others describe him more as a servant or keeper of the changeable sea. He was also a seer, though one who revealed the future only when held fast.

I can add colours to the chameleon,
Change shapes with Proteus for advantages,
And set the murderous Machiavel to school.