Creative, magical solutions are occasionally tied to unintended consequences, though this is usually on my part and not my players. Having a villain try to escape by flying away when the players have all their spells slots, for instance, is a fantastic way for said villain to take fall damage on top of spell damage and probably also fall into the wood-chipper– I mean into the range of the martial classes.
Every so often, though, the players cast a spell and I have to pipe up with an “if you really want to, okay” so that they second-guess themselves into not being buried alive.
Also, to save the unfamiliar some trouble, this is what Tiny Hut does. You may be used to it having some troublesome, copyright protected name in front of the spell’s name.
Upcoming Content & the Order To Expect It: A postmortem on the Dragonborn racial splatbook from the Unearthed Arcana. (Patreon Production Blog)
A new Unearthed Arcana featuring a bunch of new magical items. (Patreon $1 tier)
A new Unearthed Arcana for tracking weight and carrying capacity. (Patreon $1 tier)
A blog post about running Red Hand of Doom from 3.5 in a 5e setting. (This site. Probably will feature some creative writing.)
Issue #2 Update featuring: Pages.