Astral Amplification Collar (Wearable by Mount)

This collar has 3 charges, and it regains 1d3 expended charges daily at dawn or 1 charge by spending 10 of your Lay on Hands pool to fuel the ring. While your mount is wearing the collar, you can use a reaction to expend 1 of its charges to make a melee attack against one creature you can see within 5 feet. The collar produces spectral tusks upon your mount and makes its attack roll with a +7 bonus. On a hit, the target takes 2d10 force damage and if the target is large or smaller must make a DC 15 Dexterity Saving throw or be grappled by your mount.  When grappled in this way the mount can move at full speed with no penalties, and the rider does not suffer disadvantage to attacking the grappled target with a lance at close range.  Only one creature can be grappled in this way at a time.

Notes: Damage: Force, Damage, Control, Combat, Jewelry