Has anyone ever seen a homebrew adaptation of Mtg's Phyrexians for 5e? I've looked a few places and haven't seen any anywhere so I thought I'd ask before I tried to hack it on my own.

Anyone have any suggestions for how one might make them in 5e? By their nature I'm thinking I'd use existing creature stat blocks and add phyrexian-traits to them, I'm just vague on the extent I should modify them.

Thanks!

For myself I took a few existing things to simulate the phyresis plague.

First, instead of an oil slick I made the plague an airborne gas. Not only does this drive fear with COVID-19 going on, but if your players see a gaseous infection they know it's trouble.

Second, I used the Sewer Plague in the DMG and modified it. I changed its 1d4 days duration to 1d4 hours. It's reletively easy to shrug off with it's DC 11 CON save, so to make it as deadly as infect I made the disease stack its effect of adding one point to exhaustion for every failed save. This is mainly present in the Germs, for each hit they make forces a player to make a save.

Third, the Germs of the virus are the main force behind it. While the gaseous fog can infect the players, I only have it where entering it forces a CON save. If you are already infected you are immune to the gas. The germs that dwell within it and around it are the driving force of infection. So I used the Gray Ooze stat block, getting rid of Cold resistance and replacing the corrode feature with the Sewer plague variant discussed above.

Finally, when your player dies from the infection, they don't truly die. I would play this off as you want, but I personally would have them rot into a machine hybrid of their former selves. While the player definitely will roll for a new character, keep the old character sheet and make some modifications similar to a Construct. A reanimated metallic corpse is a cool way to drive on your campaign.

If your still looking you should check out this link

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.gmbinder.com/share/-LWCGt9AYrhfMs0dnr9w&ved=2ahUKEwia8JP0ntjqAhXzl3IEHWYnClgQFjABegQICBAB&usg=AOvVaw0yt_ZH7ldTlvR5v27qOHvD&cshid=1595125032201

Interesting. The corruption mechanic is intriguing, and I'm sure I could adapt some of the phyrexian abilities and graft them onto other creatures as needed. 

Sadly this campaign is on indefinite hold, but who knows when I might pick it back up again! 

Are the players members of the Mirridin Resistance?

No, it was for a Ravnica campaign where OG Yawgmoth phyrexians were attempting to cross over by manipulating an Izzet researcher (who'd been experimenting with extradimentional communications and accidentally made contact with Yawgmoth) into opening a portal for them. The researcher, Gix (nudge nudge) was a regular at the bar that all the players owned, and would secretly be the main bad guy the whole time. 

Maybe look at the simic hybrids for ideas of body parts that get changed into something different.  

Eh. They're already a thing in the world. Phyrexians should have a more Hellraiser vibe, like necromancy mixed with constructs, that kind of thing is more the way I was leaning. 

Skin metallic horrrors that want to make anyone that not pure totheir twisted version of pure and immortality 

I'm working on a set of features to add to any creature to make it phyrexian. Unarmored defense, nonmagical damage resistance, an infect mechanic, and stat increases based on the MTG colot wheel. Building a campaign in Theroes, going to have phyrexians kill my party and send them to the underworld. When they get back to the mortal realm they'll find a phyrexian invasion (from new phyrexian) and the ones leading the army will be the one that killed them and his generals, their own corpses from the encounter that killed them converted to phyrexian while they were dead

Interesting 

Concept 1: So Phyresis would be similar to Ceremorphosis, nothing short of divine intervention will stop you from becoming a Phyrexian once you come in contact with the glistening oil unless you're a planeswalker (although with the new All Will Be One lore that isn't necessarily true anymore after they modified the reality chip). So, think of them as Sadistic Mechanical Mind Flayers. They would be Lawful Evil innately as weirdly enough they think their cause is 100% righteous but operate in both overt and subversive methods to further their goals with compleating the entire universe to the one will, which now includes compleating Gods in the next set, March of the Machines, dropping in April. 

Concept 2: The guy who said use the Simic Hybrid mutations actually has a decent idea for stat block/utility of the Compleation process once your character goes through that process, but you'd need to add more flavor to those selections to fit the Phyrexian theme, that theme being expanding their numbers by spreading the glistening oil as much as possible. Reminder not all beings that are affected by Phyresis survive the Compleation process. So, you could also add a DC constitution save of DC 15 or 20 for surviving if you wanted to go hardcore and subject players to this process.

So basically, fuse those two concepts and you have a baseline for Phyrexians in 5e!!!

As a player who wants to play a phrexian it's about flavour.

I decided I would play as a class that could bring back the dead (I choose wizard necromancer) and played a warforged but with skin on so it looked like I was a human. Anytime I'd bring someone back they'd become robotic versions of themselves. Memories somewhat intact but with no personality except for my ture personality which is cold and u carring. The bond is I will make my way back to New Phyrexia or I will turn this into a proxy Phyrexia for Elesh Norn

I found this to be rather helpful for inspiration building my own campaign utilizing them as BBEGs

https://www.gmbinder.com/share/-MYlGPAwIkEIBNF7cJ5p