Chaos Summon

Choose a point within range that you can see, that is neither occupied nor has an occupied space within 10 ft of it. Roll 1d8;

1. 1d4 succubi.
2. 3d4 swarms of poisonous snakes.
3. 3d4 elephants.
4. 1d4 unicorns.
5. An abominible yeti.
6. A young red dragon.
7. A young silver dragon.
8. A rakshasa.

The creature or creature(s) is/are summoned at the point you chose. They act on their own but follow your orders. They are removed when you dispell them (as a bonus action), after 30 minutes, when all of the creatures reach 0 hit points, or when you lose concentration on the spell.