Slightly improvee gameplay with HBHQ and Zatanna, with 48% to recover power bars with combo unleashed with at leaat 21 hits (Level 5 artifact). Boss Nightwing has a chance to stun his opponents with his specials. He deals crit damage when opponent is stunned. His crit damage values are increased. I am generally a FREE TO PLAY player, so I don't own powerful artifacts like beta club, sword of sin & salvation. I work with whatever that is given free.