Spell Mastery & Uncanny Forethought Spells

[Asteron]

The feat Spell Mastery allows you to pick a number of spell equal to your INT mod and cast them without your spell book. Uncanny Forethought allows you to leave spell slots open to and cast those spells spontaneously. What are some of the best spells to pick for these feats?

This is for a 7th level Transmutation domain Wizard.