Poison/Sickness based Warlock

Helloo :)

I am quite new to DnD and just started in a campaign. I really like Warlocks and I especially like the Mother of Sorrows Patron which I'm going for specifically in this campaign.

Since this subclass is poison and sickness based I'm having a bit of a hard time, since there are not a lot of poison/sickness spells that I can profit.
Therefore I made two homebrew spells specific for this playthrough. Sadly I think I still can't really fullfil the theme. So I am looking for inspiration.
Note: This subclass ignores any resistances AND immunity while dealing poison damage.

At the moment I've made the following two spells:

Infectious Orb: Sending out an orb which infects a creature and is able to spread to another creature if the creature has the poisoned condition.
Mother's Blessing: Cleansing allies from any infections, diseases (magical or non-magical) and poisoned condition. 

If there are any suggestions or ideas for similar spells (I think the theme is quite clear) let me know! 
Thanks in advance! c:

Just a fair warning for you a lot of monsters have poison resistance or poison immunity not all but quite a bit

Quote from Balthoran >>

Just a fair warning for you a lot of monsters have poison resistance or poison immunity not all but quite a bit

This isn't really an issue in this specific case, because they're talking about using the "Mother of Sorrows" patron, which is a third-party subclass from the Book of Ebon Tides One of this subclass's core features is the ability to ignore resistance and immunity when dealing poison damage.

Quote from wagnarokkr >>

Quote from Balthoran >>

Just a fair warning for you a lot of monsters have poison resistance or poison immunity not all but quite a bit

This isn't really an issue in this specific case, because they're talking about using the "Mother of Sorrows" patron, which is a third-party subclass from the Book of Ebon Tides One of this subclass's core features is the ability to ignore resistance and immunity when dealing poison damage.

 Oh I see 

Yes, sorry I should've mentioned that. I'm gonna edit the thread real quick to clear the confusion. Still thank you for letting me know! :D

These two are cantrips, but I made two spells inspired by the League of Legends champion Cassiopeia (her Q and E). I haven't used these yet in my campaign, but I was thinking about adding these spells to bullywugs or other swamp monsters my party might face. These would fit very well into a poison themed warlock as well.

• Noxius Burst: An AoE spell that deals minor damage and gives poisoned condition
• Toxic Bolt: A single target spell that always crits on poisoned enemies. This might cause some balancing issues if/when there are more potent poisons that just the single round Noxious Burst.