Seal of Autmonon

While holding this artifact, you can speak its
command word, ("Disguise"), as a bonus action
to cause it to transform into an ordinary
wooden shield. Speaking the command word
again will cause it to transform back into a
wedge-shaped piece of the Seal of Autmonon.
Effect: Regain 1 HP at the start of your turn.
It appears only a portion of this artifacts power has
been deciphered.