Confer Weakness

You study a single enemy you can see to magically glean insight into its defenses; this insight is then telepathically communicated to your allies. Up to three creatures of your choice within range gain advantage on their first attack roll made against the studied enemy within 1 minute. The effect then ends for that creature.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can choose one additional target within range for each slot level above 1st.