True, maybe Cambion would've been better, but Overseer has a 3/4 with an upside which is always good to me. Also I wanted to play with cards that aren't seen that much these days.
I've always preferred Blood Ritual because in Midrange it's good to control the board for Zombies and this helps with that; having zombies do some chip damage then using it as removal, or getting rid of pesky Light Echos with a GP even if Protected is great. When you have control (or when it's even) you get Frenzy anyways from attacking their God. Even if you're ahead of board and your board is too crowded with Zombies you can remove your own if you need to play something else.
An aggro version with Soul Burn and Cambion/Faithbreaker and a lower curve does seem fun though.
RE: Tribal Warfare: Nether Edition. Nether Neither Good or Bad with 9 Wins