Ranger's Expanded Concentration

After much mental and physical training in expanding your concentration while marking your quarry, you gain the following benefits:

• Increase your Constitution score by 1.
• While concentrating on either the Hunter's Mark spell or Favored Foe, you can simultaneously concentrate on a different concentration spell from the Ranger Spell List.
• If you lose concentration, you choose whether you lose concentration on Hunter's Mark / Favored Foe or the other Ranger spell.