Conjure Ooze

You summon an oozing ally that rises from an unoccupied space that you can see within range. You choose one of the following options for what appears:  one Gelatinous Cube, one Ochre Jelly, or one Black Pudding.  An ooze summoned by this spell is absorbed into the earth when it drops to 0 Hit Points.

Roll initiative for the ooze, which has its own turns. When you summon it and on each of your turns thereafter, you can issue a verbal command to it (requiring no action on your part), telling it what it must do on its next turn. If you issue no command, it spends its turn attacking any creature within reach that has attacked it.

When the spell ends, the ooze remains and will continue attacking any creature in the vicinity.