I really like the new Unearthed Arcana: Three Subclasses, but I think they need a few changes. Here is my take on Circle of Spores. What do you think?
I changed Circle Spells,
clarified the Halo of Spores reaction to make it protective,
added plant Wild Shape,
expanded Fungal Infestation to not require you to deal the killing blow and to raise undead back to normal life,
added Powerful Poison to fix the problem of many enemies being poison-immune,
and added protection from disease and poison damage to Fungal Body.
Circle of Spores
Circle of Spores Features
Druid Level Feature
2nd Circle Spells, Halo of Spores, Symbiotic Entity
6th Fungal Infestation, Powerful Poison
10th Spreading Spores
14th Fungal Body
Circle Spells
Your symbiotic link to fungus and your ability to tap into the cycle of life and death grants you access to certain spells. At 2nd level, you learn the chill touch cantrip. At 3rd, 5th, 7th, and 9th level you gain access to the spells listed for that level in the Circle of Spores Spells table.
Once you gain access to one of these spells, you always have it prepared, and it doesn’t count against the number of spells you can prepare each day. If you gain access to a spell that doesn’t appear on the druid spell list, the spell is nonetheless a druid spell for you.
Circle of Spores Spells
Druid Level Spells
3rd continual flame, gentle repose
5th revivify, stinking cloud
7th sickening radiance, storm sphere
9th cloudkill, contagion
Halo of Spores
Starting at 2nd level, you can launch toxic spores at other creatures. When a creature within 10 feet of you tries to harm you or one of your allies, you may use your reaction to deal 3 poison damage to that creature. This damage increases to 6 at 6th level, 9 at 10th level, and 12 at 14th.
Symbiotic Entity
At 2nd level, you can use your Wild Shape to transform into a plant, and you gain the ability to channel magic into the spores that infuse you.
When you use your Wild Shape feature, you can awaken those spores, rather than transforming. When you do so, you gain 3 temporary hit points per level you have in this class, the damage of your Halo of Spores feature doubles, and your attacks deal an extra 1d6 poison damage to any target they hit. These benefits last for 10 minutes or until you use your Wild Shape again.
Fungal Infestation
At 6th level, your spores gain the ability to animate corpses. If you hit a living creature with your Halo of Spores damage, it is infected for 1 hour, and the creature rises as an undead on your next turn after it dies. It has the statistics of a zombie but only 1 hit point. In combat, its turn is immediately after yours, and it obeys your mental commands. It remains animate for 1 hour, after which time it collapses and dies.
If you hit an undead creature with your Halo of Spores damage, it rises as a living creature. After 1 hour it does not collapse and die, but it no longer follows your commands.
Powerful Poison
Starting at 6th level, your poison is potent. Poison damage you deal ignores immunity and resistance, and if you inflict the poisoned condition, immune creatures instead have advantage on saving throws against your poison.
Spreading Spores
At 10th level, you gain the ability to seed an area with deadly spores. As a bonus action, you hurl fungal spores up to 30 feet away, where they swirl around in a 10-foot cube for 1 minute. While the cube of spores persists, you can’t use your Halo of Spores feature, but any creature that starts its turn in the cube takes your Halo of Spores damage. The cube of spores vanishes early if you use this feature again.
Fungal Body
At 14th level, the fungal spores in your body alter you: you are immune to poison damage, and you can’t be blinded, deafened, diseased, frightened, or poisoned, and if an attack is a critical hit against you, it doesn’t deal its extra damage to you.
I changed Circle Spells,
clarified the Halo of Spores reaction to make it protective,
added plant Wild Shape,
expanded Fungal Infestation to not require you to deal the killing blow and to raise undead back to normal life,
added Powerful Poison to fix the problem of many enemies being poison-immune,
and added protection from disease and poison damage to Fungal Body.
Circle of Spores
Circle of Spores Features
Druid Level Feature
2nd Circle Spells, Halo of Spores, Symbiotic Entity
6th Fungal Infestation, Powerful Poison
10th Spreading Spores
14th Fungal Body
Circle Spells
Your symbiotic link to fungus and your ability to tap into the cycle of life and death grants you access to certain spells. At 2nd level, you learn the chill touch cantrip. At 3rd, 5th, 7th, and 9th level you gain access to the spells listed for that level in the Circle of Spores Spells table.
Once you gain access to one of these spells, you always have it prepared, and it doesn’t count against the number of spells you can prepare each day. If you gain access to a spell that doesn’t appear on the druid spell list, the spell is nonetheless a druid spell for you.
Circle of Spores Spells
Druid Level Spells
3rd continual flame, gentle repose
5th revivify, stinking cloud
7th sickening radiance, storm sphere
9th cloudkill, contagion
Halo of Spores
Starting at 2nd level, you can launch toxic spores at other creatures. When a creature within 10 feet of you tries to harm you or one of your allies, you may use your reaction to deal 3 poison damage to that creature. This damage increases to 6 at 6th level, 9 at 10th level, and 12 at 14th.
Symbiotic Entity
At 2nd level, you can use your Wild Shape to transform into a plant, and you gain the ability to channel magic into the spores that infuse you.
When you use your Wild Shape feature, you can awaken those spores, rather than transforming. When you do so, you gain 3 temporary hit points per level you have in this class, the damage of your Halo of Spores feature doubles, and your attacks deal an extra 1d6 poison damage to any target they hit. These benefits last for 10 minutes or until you use your Wild Shape again.
Fungal Infestation
At 6th level, your spores gain the ability to animate corpses. If you hit a living creature with your Halo of Spores damage, it is infected for 1 hour, and the creature rises as an undead on your next turn after it dies. It has the statistics of a zombie but only 1 hit point. In combat, its turn is immediately after yours, and it obeys your mental commands. It remains animate for 1 hour, after which time it collapses and dies.
If you hit an undead creature with your Halo of Spores damage, it rises as a living creature. After 1 hour it does not collapse and die, but it no longer follows your commands.
Powerful Poison
Starting at 6th level, your poison is potent. Poison damage you deal ignores immunity and resistance, and if you inflict the poisoned condition, immune creatures instead have advantage on saving throws against your poison.
Spreading Spores
At 10th level, you gain the ability to seed an area with deadly spores. As a bonus action, you hurl fungal spores up to 30 feet away, where they swirl around in a 10-foot cube for 1 minute. While the cube of spores persists, you can’t use your Halo of Spores feature, but any creature that starts its turn in the cube takes your Halo of Spores damage. The cube of spores vanishes early if you use this feature again.
Fungal Body
At 14th level, the fungal spores in your body alter you: you are immune to poison damage, and you can’t be blinded, deafened, diseased, frightened, or poisoned, and if an attack is a critical hit against you, it doesn’t deal its extra damage to you.