Debilitating Poison

You inflict a target with a slow-acting magical poison that weakens the body and dulls its defenses. Choose one creature you can see within range. The target must succeed on a Constitution saving throw or become poisoned for the duration. While poisoned in this way, the target's speed is reduced by 10 feet, it gains a -2 penalty to AC, and it can't take reactions.

At the end of each of its turns, the target can make another Constitution saving throw. On a success, the spell ends on the target