Command Spider

You attempt to charm a spider that you can see within range. It must succeed on a Wisdom saving throw or be charmed by you for the duration. If the spider is currently in combat, it has advantage on the saving throw.

While the spider is charmed, you can specify a simple and general course of action, such as "Attack that creature," "Run over there," "Create Web," or "Fetch that object." If the spider completes the order and doesn't receive further direction from you, it defends and preserves itself to the best of its ability.

You can use your action to take total and precise control of the spider. Until the end of your next turn, the spider takes only the actions you choose, and doesn't do anything that you don't allow it to do. During this time, you can also cause the spider to use a reaction, but this requires you to use your own reaction as well.

Each time a controlled spider takes damage, it makes a new Wisdom saving throw against the spell. If the saving throw succeeds, the spell ends.

Clarification: Only one spider at a time may be charmed in this manner, a swarm of spiders count as 1.