Eather Conduit

As you place your hand out, a small blue gas like substance begins to emit from your palm. Make a spell attack against a creature within 5ft. On hit the creature suffers 3d6 poison damage, and must make a constitution saving throw equal to the casters spell DC or be poisoned.

If a creature dies while poisoned from this spell, the caster heals 1d4.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 and the heal by 1d4 for each slot level above 1st.