Seems potential to clog the board. Maybe I'm reading too much into it but it seems like it can be ok in a GWb human shell.
[AKH] Hapatra, Vizier of Poisons
It has a considerable amount of value but connecting in the combat phase isn't the near-given it once was and a single -1/-1 counter per turn is probably an ineffective way to manage these already congested board states. Ophiomancer is probably superior to what this card attempts to do in those colors.