Wand of Magic Missle: 3d4 + 3 (1d4 +1 per charge)
This wand has 7 Charges. While holding it, you can use an action to expend 1 or more of its Charges to cast the Magic Missile spell from it. For 1 charge, you cast the 1st-level version of the spell. You can increase the spell slot level by one for each additional charge you expend.
The wand regains 1d6 + 1 expended Charges daily at dawn. If you expend the wand's last charge, roll a d20. On a 1, the wand crumbles into ashes and is destroyed.
Spellcasting. The mage is a 9th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). The mage has the following wizard spells prepared:
Cantrips (at will): fire bolt, poison spray, mage hand, chill touch
1st level (4 slots): detect magic, mage armor, ray of sickness, shield, silent image
2nd level (3 slots): misty step, suggestion, melf's acid arrow
3rd level (3 slots): counterspell, fireball, haste
4th level (3 slots): greater invisibility, summon greater demon
5th level (1 slot): dominate person