Blessing of Fury

You select a creature of your choice within range. You issue commands that cause them to spring forth into action. While you maintain concentration on the creature they may use their reaction but not on their turn to attack as if taking the attack action on their turn(so they benefit from extra attack and sneak attack).

The creature benefiting from this blessing may decide to end this at any time when they perform a successful weapon strike. If they do this the weapon strike does an additional 4d8 of the weapon's damage.