Minecraft wiki entry for Evoker, associated text: The evoker signals this attack by producing white particles () and a higher-pitched horn-like sound. Three vexes appear nearby. The evoker can summon vexes as long as there are fewer than eight vexes within 16 blocks centered on the evoker. This spell resets the evoker's spell cooldown to five seconds, and resets the cooldown for summoning vexes to 17 seconds.