The Dagannoth Kings

The three Dagganoth Kings are named Dagannoth Prime, Dagannoth Supreme and Dagannoth Rex.

They are at the bottom of the Waterbirth Island dungeon. Their lair is circular and surrounded by water filled with 12 Spinolyp (level 76) spawns. Although they don't hit very often, they steal 1 prayer point every time they do. They only drop bones, so there isn't much of a reason to kill them.

The Dagannoth Kings are the only monsters that drop the Dragon Hatchet, the most effective woodcutting hatchet in the game. They also drop mud staves, seercull bows and combat rings. The rings are:

Melee

-Warrior ring - +4 slash attack/+4 slash defence

-Berserker ring - +4 crush defence/+4 strength

Range

-Archers's ring +4 range attack/+4 range defence

Magic

-Seers ring - +4 magic attack/ +4 magic defence