Shapechange

General Feat (Prerequisite: Level 4+, Spellcasting or Pact Magic feature)

You have learned to exert changes over your own physical form, and gain the following benefits.

Change Shape. You know the Alter Self spell and can cast it at will, but are only able to use its Change Appearance feature. You are able to use its other features if you spend the appropriate level of spell slot when casting.

Concentration. You ignore the Concentration property of the Alter Self spell when not using a spell slot to cast.

Duration. Your alterations made last until you choose to reverse them, or you are affected by the Dispel Magic spell or similar effect (such as the effect of Antimagic Field or Moonbeam).