Saeviomagy
Adventurer
The other possibility is to give him a certain number of second winds per long rest, bringing him in to line with most other healing mechanics.
It's not a meaningful limitation in any way, because the players can enter combat whenever they feel like it. The fighter insults the wizard's mom, the wizard punches the fighter for 1 damage, and the fighter uses Second Wind as a minor action before apologizing to the wizard."The OP wants to limit the use... limiting it ... doesn't do that." I think some part of your idea was missing in that statement.
Or the shenanigan could simply not work according to the rules, or the DM could rule against it. It's 'rulings not rules' so silliness like that only works if the DM rules it works. If the DM is already tweaking the rules on second wind to work the way he wants, he wouldn't rule them to work the way he doesn't want. Potential loopholes in wording might matter for a rule that's going to be published somewhere, but for a house rule it's a non-issue, the DM knows exactly how he intends for it to work.It's not a meaningful limitation in any way, because the players can enter combat whenever they feel like it. The fighter insults the wizard's mom, the wizard punches the fighter for 1 damage, and the fighter uses Second Wind as a minor action before apologizing to the wizard.
Yes, it's dumb, but the party that engages in these sorts of shenanigans is more likely to survive and defeat the Big Bad than a party that just shrugs and pretends that it's not an option.
I've limited it to "cannot be used again until after a short rest and taking damage costing at least one non-temporary hit point."
It's not a meaningful limitation in any way, because the players can enter combat whenever they feel like it. The fighter insults the wizard's mom, the wizard punches the fighter for 1 damage, and the fighter uses Second Wind as a minor action before apologizing to the wizard.