Armor Class 12
Hit Points 55 (10d8 + 10)
Speed 30 ft.
Saving Throws DEX +5, INT +8
Skills Arcana +8, Perception +2
Senses passive Perception 12
Languages Common plus any one language
Challenge 5
Fluxbending Overcast (Recharge 5–6). The blastseeker can create an additional effect immediately after casting a spell. Roll a d6 to determine the effect: 1-3. The blastseeker teleports, swapping places with a creature it can see within 30 feet of it. 4-6. The blastseeker and each creature within 10 feet of it must succeed on a DC 16 Constitution saving throw or take 11 (2d10) thunder damage.
Quarterstaff. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage, or 4 (1d8) bludgeoning damage if used with two hands.
Guildmaster's Guide to Ravnica, p. 242