What would you like to play for a level 20 one-shot?

[Specter]

Basically the title. I'm not very thrilled about one-shots, but this sounds like it could be fun. What would you enjoy?

[MrFahrenheit]

Bugbear paladin 2/conjurer 18
Post racial stats and feats at level 20:
20/14/14/13/8/13 (+PAM)
Step 1: summon mooks. Can't lose concentration on them.
Step 2: step into shotgun formation with halberd (extra reach on my turn thanks to racial, plus a defacto extra attack thanks to PAM), behind my offensive line of minions.
Step 3: use slot levels 1-4 for smiting. HIKE!

[Dalebert]

My shadow monk with 2 levels of warlock. He's 17 now so it's not far away. He'll be monk 18 / warlock 2. I believe 18 is when he gets Diamond Soul (?). I believe that's what it's called but it's insane. It's basically greater invisibility and resistance to nearly everything without concentration.

He already has proficiency in all saves and can reroll a failed save for 1 ki point. He has a Staff of Power and Luckstone that combined give him +3 to all saves. What I need is a halfling paladin that I can wear in a backpack to grant me his aura and he'll be invincible!

[tieren]

I'd either go straight druid or OotA paladin, my two favorite capstones that I will likely never see.

[jaappleton]

Sorcerer. I want to drop some 8th and 9th level spells on people and Twin them.

[Vaz]

Pal 3/Sorc 17, and go ham on the Smites.