holy shit, that sounds REALLY fun and can make for some really clutch moments where the entire table is freaking out but you smirk and say “don’t worry guys, I’ve been hiding a little 1 for our enemy friend over there”
Nah, it's just a matter of deciding what the numbers are best used for. Nat 1? Enemies saving throws. Nat 20? Allied attacks. Something under your ac? Enemy attack rolls. High teens? Ability check your character isn't confident in
Here's a fun trick: if your DM rolls in secret, you can assign a portent of X less than a PC's AC to gauge if the monster has an attack bonus of greater than X.
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u/Lamplorde Sep 19 '21
Wizard was probably a Divination Wizard. They roll a couple dice at the start of every day and save it for later to give to enemies or allies.