Ghostform vs. Greater Blink

[ZamielVanWeber]

What "snakes" do you have in mind?

The ethergaunts. They all cast as mid to high level wizards and have massive int to back it up. There are also ghosts, ethereal dragons (not too dangerous, but still), tome dragons exploring the ethereal, ethereal cyclones, and, my personal favorite, plopping directly on top of an ethereal curtain. That only happened once, but boy was it disastrous.

Also what you are describing is not how Greater Blink works. You are blinking and get all the benefits. You ignore the "you miss 20% of the time" because you control the timing, but you must still blink in and out. It gives you the option at burn a standard out of sequence (a readied action) to make an attack miss you altogether. You don't get to cast and go perma-ethereal.