Suggest a Familiar

Title says it all. Come up with a familiar and explain what he, she or it does.

For example;

Haunted Sarcophagus
Requires Crimson Charm, Mummy Dust and Bar of Gold

Appearance: A large golden coffin with a face.
Examine: Solid gold and cursed, what more could you want?

Abilities:
Blessing of Itchlarin - Gives a refill of 5 prayer points, but only once every couple of minutes.
Embalment - Buries all bones nearby (including those in your inventory)
Mummify (Scroll Ability) - A deathly spell that inflicts effects of the dead on your opponent. If inflicted onto a living foe, the foe becomes undeathly. Whilst undeathly, magic defenses fall dramatically, it cannot regenerate health and becomes susceptible to Crumble Undead.
If inflicted onto an undead foe, the foe will have their stats drop, their regeneration cancelled out for a short while and increases Crumble Undead's max damage on that foe.
Pharoah's Treasure (BoB) - Haunted Sarcophagus can carry up to seven items of treasure, such as silver or gold (excluding coins).

Gemma Titan - Level 99
240 shards, Green Charm, Sapphire
A large titan made of blue crystals, with a green orb for an eye
"Crystals are an elf's best friend."

Abilities:
Multifacet - For every different attack you recieve or make (eg casting Fire Blast then being hit by a Saradomin Sowrd) your combat stats are invisibly boosted by 1% up to 18%.
Refraction Pulse (Scroll) - All enemies in a cone in front of the Gemma Titan within 6 squares are hit with a brilliant beam of energy that deals heavy Magic damage and stuns for 2 seconds.