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More information on the Negar
Name: Negar
Size: Varies, the smallest are 6 inches tall with special abilities (usually poison claws if they don't have anything else), while the very largest are 8 feet tall, without any special abilities besides brute force. Their are many sizes and shapes in between these two extremes.
Intelligence: Depends directly on there size. The 6 inch ones are very intelligent and crafty, and will sneak to kill people in addition to getting basic magic or other special ability. The 8 feet ones are dumb brutes. In between they vary in intelligence. Currently none of them are smarter then a very smart animal. New types might appear in the future.
Magic: None besides turning incorporeal at daytime.
Daytime: When its daytime, Negar turn incorporeal and invisible, they are still unable to pass through anything made with their weakness in it, and unable to effect the normal world in any way. They heal all wounds they accumulated during the night if they aren't killed. At night they become regular again, wherever they were standing when the sun sets (they can move around in the day if they feel like it).
Special abilities: They are somewhat like dragons, and absorb a little bit of the power of the land they inhabit. Only those smaller then a foot have any magic or special abilities.
Weaknesses: Currently they are weak to iron, although they may adapt and gain a new weakness in the future.
Feeding: they "take" sentient creatures (this includes dragons, but not dragonlings due to the fact that dragonlings aren't sentient), any corpse of a being killed by a negar dissapears at daybreak. It is theorized that they feed on them, or turn them into new negar using some evil process.
EDIT:
Breeding: It is unknown how exactly more of them come into being, but it has been observed that many more of them come into existence when beings are taken, although some of them appear to appear even if no one has been taken in the area before.