D&D General Rules that weren't...

[Li Shenron]

I played 5e for years assuming that higher ground granted advantage, but eventually realized there isn't such rule . Then I played very little for a couple years in a row, and forgot about it, so recently once again I granted advantage for higher ground for a few sessions before having a second reckoning

Does something like that happened to other DMs? Is there any rule you could swear you saw in the books and then realized you made it up?

 

[Paul Farquhar]

Don't worry, Larian made the same mistake...

 

[Li Shenron]

Don't worry, Larian made the same mistake...

That was probably what re-ignited my original illusion...

 

[DeviousQuail]

Regaining half your hit dice on a long rest. I knew the rule and ran it as such for a while. Somewhere down the line I forgot it and as a player I would regain all my HD on a long rest. When I was DMing it was never something I had to worry about. It randomly came up in conversation a couple years ago and I claimed that you get everything back. It'll be much harder to forget now.

 

[Seramus]

Don't worry, Larian made the same mistake...

Larian used the wrong Mystra! They fell for the horny memes of the old dead Mystra. I think "she died in the 80s" counts as a forgotten rule.

 

[DeviousQuail]

I played 5e for years assuming that higher ground granted advantage, but eventually realized there isn't such rule . Then I played very little for a couple years in a row, and forgot about it, so recently once again I granted advantage for higher ground for a few sessions before having a second reckoning

Does something like that happened to other DMs? Is there any rule you could swear you saw in the books and then realized you made it up?

Not a hard-coded rule, but I could see how DM discretion regarding advantage/disadvantage could turn high ground advantage into a de facto rule.

 

[Reynard]

Lots of 3.5 and Pathfinder rules creep into my brain when playing 5E. The Opportunity Attack stuff is especially middled at this point.

Also, are stairs difficult terrain? That is something i say sometimes while running but I don't actually remember where it came from.

 

[pukunui]

Regaining half your hit dice on a long rest. I knew the rule and ran it as such for a while. Somewhere down the line I forgot it and as a player I would regain all my HD on a long rest. When I was DMing it was never something I had to worry about. It randomly came up in conversation a couple years ago and I claimed that you get everything back. It'll be much harder to forget now.

That is the rule in revised 5e: you regain all your HP and HD on a long rest.

 

[DeviousQuail]

That is the rule in revised 5e: you regain all your HP and HD on a long rest.

I haven't delved much into the 2024 rules, but I'm not shocked by this change.

 

[Willie the Duck]

Regaining half your hit dice on a long rest. I knew the rule and ran it as such for a while. Somewhere down the line I forgot it and as a player I would regain all my HD on a long rest. When I was DMing it was never something I had to worry about. It randomly came up in conversation a couple years ago and I claimed that you get everything back. It'll be much harder to forget now.

In my home 5e(2014) campaign -- the one my co-DM learned from -- I had a house rule that you didn't regain any hp on a long rest, only all your HD. He repeating it (as a gamebook rule, apparently forgetting or having missed that it was a house rule) to a group of kids he was teaching to play the game. He apparently insisted it was a rule and was corrected by a 8-10 year old. He has forgiven me (mostly).