Debilitating Poison

You inflict a target with a slow-acting magical poison that weakens the body and dulls the senses. Choose a creature you can see within range - the target must succeed on a Constitution saving throw or have the Poisoned condition for the duration. While Poisoned in this way, the target's Speed is reduced by 10 ft., it suffers a -2 penalty to AC, and can't take Reactions.

At the end of each of it's turns, the target can remake it's saving throw, ending the spell on a success.