Suffused: Prevent overlap between origins and species

[mlenser]

Dragonborn should be encouraged to pick the draconic origin, not discouraged via overlapping features.

[shemetz]

Aasimar - Celestial Resistance. You have resistance to necrotic and radiant damage.

Celestial - Radiant Soul. You have resistance to radiant damage and you have advantage on saving throws against being frightened.

For cases like these, can we say "If you already have resistance, you have immunity instead"? If so, that's a good solution for many of them. If not, alternatives would be...

• If you already have resistance, you gain another resistance instead (from some list)
• Change Aasimar trait to grant choice between necrotic resistance and radiant resistance
• Change one of the two resistances to advantage on saving throws against sources that deal this damage

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Dragonborn + Draconic: there's Dragon's Breath and Dragon's Claws.

The breath basically lets you use the breath/roar twice as often (twice between rests). They scale identically. It's not great, but not horrible either, because using a feature twice as often is just less versatile, not less powerful.

The claws are bad, because they're literally the same thing twice. They're actually conflicting not only with Dragonborn, but with all species that have natural weapons. I would rather prevent overlap with all of them, not fix this specifically for dragonborn.

Suggestions:

• Something like "if you already have a natural weapon, you can choose to take the punches in bunches feat instead".
• Replace draconic claws with draconic tail or spines, something with different mechanics. The tail could have reach, for example, and spines could be something that damages those who grapple you or vice versa.

[mlenser]

This is a note for me, not meant to spawn discussion yet.

I expect this'll be a non-issue if I do #370 as I plan to do.

[Marcloure]

Just an idea, but maybe the Sorcerer can pick another 2nd level feat from the theme related to their origin? This would prevent the overlap, since the player can pick another feature in place of the resistance.