Blood Goblet

You dip your finger into a vile of blood, pull your finger out and let a drop fall to the ground. As it touches the ground a 4'6" goblet comes into existence. In the goblet is blood from the enemies that have been slain in battle. A red aura, maybe 15 feet around, surrounds the goblet. Anyone who enters this aura gets 2 rounds of 1d4 added to save rolls and attack rolls. If you remain in the aura all 4 rounds that the spell is active, take 1d4 per hit you receive for 1 round as well as receiving agro from all adds or bosses in a 30 foot radius.