Desecration

Unholy energy spreads out from a point you touch on the ground to fill up a 15ft radius circle for the duration. The energy spreads around corners. For the duration, undead creatures within the circle have advantage on Wisdom saves and skill checks. Also, if they begin their turn in the circle, they get 2d8 temporary hit points. Creatures of your choice suffer disadvantage on Wisdom saves and skill checks while inside the area.

When the spell ends, the area's tainted by unholy energy and becomes desecrated ground. If the area contains an altar, shrine or other permanent fixture devoted to a deity, pantheon, or higher power with ideals vastly different from those represented by the holy symbol used in the casting, it's destroyed.