My family is waiting for me to run a game, so this will be short.
My brainworm of the day was wondering why wizards in D&D 5e have so few summoning spells. That’s morphed into thinking about what kinds of summon spells wizards would have.
Traditionally, at least in my brain, wizards have a long history of calling on powers they cannot control and meddling with things they do not understand. It’s part of why wizards have a bad rap in some places. It’s also part of why the ones that survive end up so powerful. Drinking from the firehose and all that.
In the 5e Player’s Handbook (and the other official 5e spell collections I’ve seen), wizards are able to safely summon elementals and a few spirits (Unseen Servant, etc). And if you think of the official 5e spell collections as the “mostly safe and authorized” spells, these limits make sense.
But there’s a model for unsafe summoning spells, via Contact Other Plane. So what if PC wizards researched their own forbidden spells, to let them summon dangerous entities without any guarantee of control? These summoning spells might take the shape of an encounter table, with one entry being the entity the PC was aiming for while the other entries are unknown to the PC.
If clerics can summon celestials, and druids can summon the fey, perhaps wizards dabble in the unsafe arts of everything else. If they manage to make bargains with the things they summon up, they might become warlocks. If they fail to contain the dangerous things they call on, they might become dead—along with most other people around them.
There’s probably some correlation between the level of the spell and the power of the creatures it could reliably control. A PC wizard might begin their spell research by learning about what to expect, with early missteps possibly leading to greater danger down the road.
Clearly, the more ambitious the wizard, the more dangerous the spell.
I’ll explore this more later. Right now, some eager adventurers are calling for me.