Ganodermic beast

Ganodermic beasts will be released later this november.

Towards the end of the month, we’ll be launching the Polypore Dungeon. A ramokee has snuck into RuneScape and used her skinweaving powers to create a variety of horrific new monsters, many of which can only be killed by high-level slayers, and are best tackled with magic. Those who can defeat the ganodermic beasts (level 95 Slayer) may emerge with a unique kind of battlestaff and the materials to make incredibly protective mage armour. Elsewhere in the dungeon, there’ll be mage armour for lower-level fighters, and a very suspicious mushroom for PKers to eat.

http://services.runescape.com/m=news/behind-the-scenes---november-5