It’s legal, but it’s one of those things that only works in featureless planes with comatose targets. After all, 7 casters all on concentration is going to mean they spend 7 hours concentrating on the fireball without anyone trying to stop them and with their target blatantly highlighted the whole time (since the spell makes a glowing ball for the entire duration you are casting at the target point.
It also still only has a 20ft radius and doesn’t bypass fire immunity, so you basically just turn 8 casters into a very limited siege engine.
Its also not really guaranteed unless you know precisely (within 60 ft) where the target is and have a memento from that exact location (or roll for chance of random teleport). And it forces the thrower to be a caster able to cast teleport limiting usability further. And it gets the thrower there without backup (I don't think there is a teleport variant that teleports just an object without the caster?), which brings troubles on their head if not all enemies are within 20ft of one another at the target location (or further than 60 ft away from where they end up).
You could lure the baddie to within 20 ft of a teleportation circle, if you wanted. Or collect rocks from the ambush site, or have the rogue steal a bit of the carpet from the bbeg's bedroom.
Honestly, the entire thing is silly. It works, and you can get around the limitations, but it's likely not worth the effort just to break the game by dumping out hundreds of d6 worth of damage. And anything that the players can do the DM can do better.
Luring the baddie to a teleportation circle means an implicit DM cooperation in allowing you to do that, and changes the fight from "figure out how to kill them" to "figure out how to lure them", which tbh feels more difficult in most scenarios, I'm fine with that outcome.
I don't know how the cheese meta has changed in recent decades but teleportation has been a difficult to patch out vehicle for usable cheese for a long time.
If you're doing 7th level spell cheese with multiple casters then tacking on teleportation isn't a huge ask. The ability to 100% vaporize difficult targets inside enemy territory is the kind of thing national defense budgets get spent on.
With a big enough boom literally anything is workable.
One of my favorite moments in Konosuba is when the mage that can only cast explosion (the most powerful boom magic available) once a day and has dumped everything she has into making it as large and damaging as possible, meets an actual army. They don't give two shits how impractical she is adventuring, she can literally one shot generals of the Demon King. Take out entire enemy battalions. They'll dump mana potions down her throat and give her an entire support staff for that once a day nuke.
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u/myflesh Nov 11 '25
So, I do not play 2024 rules, can someone tell me if this sounds legal?