This mod currently adds one mob; the Hura Tortoise. A rare and powerful enemy which spawns in the Nether, with an equally powerful drop... The Hura Turtle is a slow tank, but be wary! It deals considerable damage if it manages to catch you.
The special weapon drop, The Anchor, follows suit! Slow attack speed, high damage, allowing for a more strategic combat style. It's a really good mod.
Screenshots coming soon!