Corrupted Lands

You call out a phrase as you slam your palm into the ground beneath you, summoning plague and disease to spread through the ground, infecting decay damage to any creature in the enchanted area.

All other creatures must make a CON save throw each turn they are in the enchanted area, dealing 4d10+(CON modifier) decay damage and slowness on a failure or causing slowness on a success.

If a creature in the enchanted area has failed a CON save throw three times in a row they fall prone and have disadvantage on their next roll (whatever it is). All creatures slowed by this action have half the movement speed each round and cannot jump, dash, or any other fast movement. Creatures slowed by this action can still fly, swim, cast spells, etc. if able.

If a creature dies in this enchanted area you restore 1d8+(CON modifier) health to you or another creature you can touch. This spell can only be casted once per long rest. If attempted to be casted more than once, you are not immune to the next cast and only can take damage from this spell and cannot restore health. The spell ends when two creatures have died in the enchanted area, your HP has fallen below 10, or you call it off. This spell can also be forced to stop if one creature in the enchanted area has passed the CON save throws three rounds in a row.