Conjure Chaos Elemental

You call forth an elemental servant. Choose an area within 30 feet of you that fills a 10-foot cube within range. A Chaos Elemental appears in an unoccupied space within 10 feet of it.  When the elemental hits 0 Hit points, it will split into 3 Amalgam Elementals that follow the same summoning rules as the Chaos Elemental. The spell ends if the time runs out or all of the elementals drop to 0 Hit points

The elemental is friendly to you and your companions for the duration. Roll initiative for the elemental, 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 elemental, it defends itself from hostile creatures but otherwise takes no actions.

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

At Higher Levels. When you cast this spell using a spell slot of 8th Level, the Chaos Elemental and associated elementals will be under your control for 1 day. When you cast this spell using a spell slot of 9th Level, the spell is no longer concentration. The Chaos Elemental and associated elementals will be under your control for an indefinite amount of time.