Animate Dead (Archlich)

You summon an undead that is CR½ or lower that you are familiar with. The summoned undead lasts until the spell ends, the summoned creature dies, or you lose concentration; no matter how the spell ends the summoned undead crumbles into a strange azure dust when the spell ends.

At Higher Levels. You can create a CR1 creature if cast at 2nd level, CR2 at 3rd level, CR3 at 4th level, CR5 at 5th level, CR7 at 6th level, CR9 at 7th level, CR11 at 8th level, and CR15 at 9th level.