Imperial demon

Imperial demons are the seventh most powerful monsters in-game. They have very powerful magic attacks and huge defence, but only hits about 1,000 on attack. They can be found in a Mystery portal or from opening a cracker. You however need to finish Desert Treasure to enter the layer.

Strategy
When they get below 100 hp they will use Black imp grenades on you which take 50 health a hit, but an antifire can make these ineffective. They use large magma spells and also they can hit with melee. A good way to kill them is bringing a dragonfire shield since they can also work on these.

Weakness and immunity
Their largest weakness being ice, it is good to bring a frozen dragon sword to them. Poison has no effect on them.

Origin
Guthix in the first God Wars was working to keep know one on top of the battle. He left one of his magical balance runes which Zamorak got a hold of. Combined with animated chaos runes, there was a bad effect. A baby demon that took half of Zamorak's power no longer having him be with the high-up ranks of gods. It has made an escape from the Abyss and when killed burns some of Zamorak's old energy it took to revive. It is estimated to last about 9,000 more years with the power it took.

Drops

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Trivia

 * After an update it will be in the Realm of Chaos for 1 hour instead.
 * Whenever you kill it, you can see Zamorak stealing some of its power back in the shadows.
 * If you bring a Catspeak amulet and use it on a visage when you enter its lair, it will be nice to you since you now have a demonical-speak-Camulet (cat and demon speak amulet).