Sources
CR
Type
Size
Alignment
Movement

Diviner

Medium Humanoid (any race), Any alignment

Armor Class 12, 15 with mage armor
Hit Points 67 (15d8)
Speed 30 ft.
STR
9
-1
DEX
14
+2
CON
11
+0
INT
18
+4
WIS
12
+1
CHA
11
+0
Saving Throws INT +7, WIS +4
Skills Arcana +7, History +7
Senses passive Perception 11
Languages any four languages
Challenge 8 (3,900 XP)

Traits

Portent (Recharges after the Diviner Casts a Divination Spell of 1st Level or Higher). When the diviner or a creature it can see makes an attack roll, a saving throw, or an ability check, the diviner can roll a d20 and choose to use this roll in place of the attack roll, saving throw, or ability check.

Spellcasting

Spellcasting. The diviner is a 15th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 15, +7 to hit with spell attacks). The diviner has the following wizard spells prepared:

Cantrips (at will): fire bolt, light, mage hand, message, true strike

1st level (4 slots): detect magic*, feather fall, mage armor

2nd level (3 slots): detect thoughts*, locate object*, scorching ray

3rd level (3 slots): clairvoyance*, fly, fireball

4th level (3 slots): arcane eye*, ice storm, stoneskin

5th level (2 slots): Rary's telepathic bond*, seeming

6th level (1 slot): mass suggestion, true seeing*

7th level (1 slot): delayed blast fireball, teleport

8th level (1 slot): maze

* Divination spell of 1st level or higher

Actions

Quarterstaff. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit:2 (1d6 - 1) bludgeoning damage, or 3 (1d8 - 1) bludgeoning damage if used with two hands.

Lore

Diviners are specialist wizards who know that knowledge is power. They might act aloof and mysterious, hinting at omens and secrets, or they might be know-it-alls, spilling secrets and insights to advance their own status or reputation.