The Sinister Mornoth Monster
'It won't,' the old man firmly said, 'your energy will be like a fountain coming from the underground. You'll enjoy endless power for as long as that monster lives.'
'Hmm... What about its hench monsters then?'
'It's working alone,' the old man reassured him, 'such a predator won't have anyone on its side.'
'That's great,' Jim said, 'but you still didn't tell me what that monster looks like? It's abilities?'
'I can't tell without seeing it,' the old man said, 'but one thing I'm sure about... that monster has something to attack the soul and drain magical power off his opponent.'
'A thorn perhaps?' Jim thought, 'or a tail ended with a needle? Like scorpions?'
'You are thinking all wrong,' the old man said, 'these are forms of poisonous monsters attacking the body. This one is different.'
'Then?'
'It must have a tentacle that's totally formed of fog,' the old man said, 'this is the only way to hit the soul.'