This magical tome appears to contain several spell scrolls. Each scroll can be used once per day, and regenerates daily at dawn. In reality, the spells are inscribed wrong, and their effects vary wildly from the intended. When one of these scrolls are used the DM reveals the spell's true effect. The unknown version is Avastions Wunderfull Spells

Summon Elemental/ Summon El Lentil. You summon the magical talking Hispanic bean El Lentil (stat sheet found in monsters)

Divine Favor/Divine Flavor. The next meal you cook taste really good.

Grease/ Geese. You create an illusion of a flock of geese a creature must make a DC 13 Intelligence saving throw or be frightened till your next turn

Rope Trick/ Dope Trick. You summon a skateboard, if you can preform a cool trick (acrobatics check) you have advantage on Charisma checks on all who see it for 1 hour.

Scrying/ Crying. A creature of within sight receives a tragic flash back, they take 2D6 psychic damage, they make an Intelligence saving throw DC 16 on a save they take half damage; on a fail they start balling there eyes out. On there turn while the spell is in effect they roll a D20, 16 or higher they stop crying and the effect ends,  on a 11-15 they enter a frenzy and make all melee attacks rolls with advantage but all attacks rolls on them are made with advantage, on a 5-10 all attacks rolls on them are made at advantage, on a 2-4 there movement speed is 0 and they are prone, on a 1 they give up on life.

 Mass Polymorph/ Bass Polymorph. You turn in to a bass for an hour or until you loose concentration.

Blink/Shrink. You allow a friendly creature to let out there problems to you.