Healing Vacuum (5e Hazard)
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Healing magic does not work in this area, as if it has been cursed by an unknown force. Any spell or magical item used in this area does not work correctly. If it was an item, it is used and the user takes 2d6 necrotic damage. If it was a spell, the spell slot is used and the caster takes 1d6 at 1st level and increases by 1d6 for each slot level above 1st.
Healing via non-magical means, such as the benefits of the Healer feat or using hit dice during a short rest work as normal.