Conjure Slaad

You summon a red slaad and magically compel it to serve you.  The slaad appears in an unoccupied space of your choice within range.  The slaad disappears when it drops to 0 hit points or when the spell ends.

The slaad is friendly to you and your companions for the duration.  Roll initiative for the slaad, which has its own turns.  It obeys any verbal commands that you issue to it (no action required by you).  If you don't issue any commands to the slaad, it defends itself from hostile creatures but otherwise takes no actions. 

If your concentration is broken, the slaad doesn't disappear.  Instead, you lose control of the slaad, it becomes hostile toward you and your companions, and it might attack.  An uncontrolled slaad can't be dismissed by you, and it disappears 1 hour after you summoned it. 

The DM has the slaad's statistics. 

At Higher Levels.  When you cast this spell using a 6th-level spell slot, you summon a blue slaad.  When you cast this spell using a 7th-level spell slot, you summon a green slaad.  When you cast this spell using an 8th-level spell slot, you summon a gray slaad.  When you cast this spell using a 9th-level spell slot, you summon a death slaad.