Yeah, It is a good combo too. But, my build need many points (I max Bwa + damballa + effigy), so no point for Tet, so I dont get it. But, with normal build (1 point for Bwa), I think Tet is ok.
I dont like Wheel or Big zombies. I think they are ok but they increase Zombify cooldown. Must put much points on zombify for your duration >= cooldown. In Uphill def, the more your Zombify last, the more chance to create zombie and renew zombie by Damballa --> Can spam Damballa all the time.
1 weird thing is dont know why no one love zombies. 9/10 bokor I met spam Effigy like dumbs. So useless when they run in dungeon.