Mount. If you chose Artifice for the Test, you can inflict a Persistent stack of Mounted that goes away when the grapple ends.
Movable. If you chose Might for the Test, you can inflict a Persistent stack of Moveable that goes away when the grapple ends.
The target's Save must be the same Stat you chose. If the target Passes their Save, they can remove 2 of your chosen effects.
As an Action, the target can attempt to break free of your grapple. Repeat the Test and Save for this Ability again, choosing Might or Artifice and incurring the same Penalties as before, but this time skip choosing effects.
You can use this Ability again on an active target to add new effects to the grapple.
You are Blunted against all but the grapple target.
If the target of your grapple moves, you can use a Free Reaction to use Movement from your next Turn to move with them (preventing the end of the grapple.)