OK first things first here are the wizards spells.

1st-level:5 (DC 13 where applicable)

Change Self

Enlarge

Mage Armor

Magic Missile

Shield

Silent Image

Sleep

2nd-level:4 (DC 14 where applicable)

Blur

Fog Cloud

Ghoul Touch

Invisibility

Knock

Melf's Acid Arrow

Tasha's Hideous Laughter

3rd-level:2 (DC 15 where applicable)

Flame Arrow

Lightning Bolt

Slow

Summon Monster III

4th-level:1 (DC 16 where applicable)

Fire Shield

Polymorph Other

and here is what the wizard looked like.