Oracle getting into CM might have something to do with the absurd Huskar nerf, there's now two heroes in CM that make him absolutely terrifying so the nerf might be pre-emptive.
With the additional nerf to Oracle, I'm not sure. Having an unstunnable unkillable Huskar for X seconds would have been brutal even with the nerf, but the Oracle nerf means he's no longer unstunnable.
Plus, Oracle doesn't let his health bottom out, so unless he ults when Huskar is already low, he's just stopping him from getting attack speed.