Burst Phantasm Beastmaster is currently just silly strong. It kills in 4s, meaning anything that relies on any kind of scaling (so like 80% of the body parts) is just useless. Fangs have way too much DPS, As does Phasing Flail and to a lesser extent Wing of Withering Glory. Goldy Locks + Bird Breast gives too much combined flat Phantasm and Atrocity. Then Beastmaster passive gives you a big enough health pool, that you just stat check anything that might somehow survive more than 4s against you. Finally just for good measure Phasing Flail+Wing means you actually scale, not that the fight will go long enough to scale. But you still do, so you just have everything, all at once.
The downside of Goldy Locks doesn't actually matter, since you can't go into negative gold. You just make sure to buy up all your gold before each round. Then resell anything you didn't actually want, thus protecting (most) of your money from the downside.