How do I get the mascot out

Hint 1 of 5:

You must be able to cast spells without being seen.

Hint 2 of 5:

You must have a spell to reduce the mascot's size.

Hint 3 of 5:

You must have some way to pacify the mascot.

Hint 4 of 5:

You must get the mascot out of the basement without it being seen.