Banlu Srisaeng

A group of travelers visiting the exotic forests of Thailand is suddenly attacked by a multi-weapon wielding maniac. Some manage to escape, others perish under his merciless blows. The maniac is the Spirited Killer, a forest dweller who kills anyone who steps into his jungle.

We have teams from China and Japan seeking out a black stone that can create immensely powerful magic. There's some resistance and the local population calls up a shaman who announces he will be a shaman for a thousand years. Yes, he's evil. So we're off to more wackiness with wizards, ghosts, zombies, and a few of those female ogres/ghouls. There are a few gut-munching scenes. It all ends up in a magical war.