You call forth an aberrant spirit. It manifests in an unoccupied space that you can see within range and uses the stat block. When you cast the spell, choose Beholderkin, Mind Flayer, or Slaad. The creature resembles an Aberration of that kind, which determines certain details in its stat block. The creature disappears when it drops to 0 Hit Points or when the spell ends.
Summon Aberration
Level 4 Conjuration · Concentration
Casting Time1 action
Range90 feet
DurationConcentration, up to 1 hour
Components
V, S, M
Spell Description
Using a Higher-Level Spell Slot
The creature is an ally to you and your allies. In combat, it shares your Initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don't issue any, it takes the action and uses its movement to avoid danger.
Use the spell slot's level for the spell's level in the stat block.