The gragas would have a better usage than just being part of his quest objectives. Ellianor would unleash all his anger and negativity on them, and get to summon something useful as a bonus.
'I wonder, what it will look like? Some hulking demon eight feet tall? A biblically accurate angel? Some Eldritch abomination?' The possibilities got his brain on overwork.
He could not sleep anyway, so he could weigh the possibilities of what would come out of the pact.
Ellianor knew that those types of creatures were hardly trustworthy, at least in most depictions, but since it would be made the moment the pact was used, then it would not have the power, or knowledge to trick him.
He banged his head against the wall and closed his eyes. He has not consumed the fruit yet. Its status gains were minimal in comparison to quests, besides the random amount of stats it gives.