Release a 10-foot wide, 3-foot-tall wave of blue-green energy starting in front of you that moves 30 feet and an additional 30 feet per round for 5 rounds, moving at the end of your turns. The wave moves around corners and over small obstacles. Upon touching a living creature, the creature must succeed a saving throw. On a failure they take 3d6 necrotic damage and their movement speed is halved. Undead creatures are instead bolstered by the wave, and area healed by 3d6 and they have advantage on their next attack.