Tattle

You choose one creature you can see, and learn that creature's hit points and hit point maximum. You can also see the hit points of all other creatures of the same species for the rest of the encounter.

When casting this spell as 4th level or higher, you learn additional information about the affected creatures. Casting this spell at a higher level gives all information that each lower level gives.

At 4th level, you learn their damage resistances and immunities.

At 5th level, you learn damage vulnerabilities and condition immunities

At 6th level, you will have advantage on attack rolls against these creatures

At 7th level, all affected creatures will have disadvantage on attack rolls against you

At 8th level all affected creatures will have a -5 penalty on attack rolls against you

At 9th level, all affected creatures will have double disadvantage on saving throws against you