Tome of Knowledge

+1 Spell Slot of any level you may Cast
+1 Spell Save DC/Attack Bonus
1/day: Observe a creature and add it to the Tome.
Gain Advantage on an attack roll against this
creature 3x/long rest, or use the Help action to
give this ability to an ally. An attack that lands in
this way receives 1d8 additional damage of the
given damage type.
Charged Open the Tome to find a creature (challenge 3 or less) it leaps from the Tome and
fights for you for 3 rounds.