Enhance Ability

Level & School
2nd-level transmutation
Casting Time
Action
Range
Touch
Components
V, S, M (fur or a feather)
Duration
Concentration, up to 1 hour
Classes
Bard, Cleric, Druid, Ranger, Sorcerer, Wizard

You touch a creature and choose Strength, Dexterity, Intelligence, Wisdom, or Charisma. For the duration, the target has Advantage on ability checks using the chosen ability.

Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 2. You can choose a different ability for each target.

Level & School
2nd-level transmutation
Casting Time
Action
Range
Touch
Components
V, S, M (fur or a feather from a beast)
Duration
Concentration, 1 hour.
Classes
Bard, Cleric, Druid, Sorcerer

You touch a creature and bestow upon it a magical enhancement. Choose one of the following effects; the target gains that effect until the spell ends.

Using a Higher-Level Spell Slot. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional creature for each slot level above 2nd.

Enhance Ability 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version allows choosing any ability score with Advantage on checks, while the 2014 version grants a specific effect based on the chosen ability. The 2024 version explicitly states "up to 1 hour" duration; the 2014 version's duration is fixed at 1 hour. The 2024 version adds classes (ranger, wizard) that can cast it; the 2014 version does not.