Shooting them with a ranged weapon is the safest way to defeat an evoker. Melee combat is also possible; corner the evoker into a small space while dodging any fangs that come your way, before striking repeatedly until it dies. Upon death, evokers drop their Totem of Undying as well as 0-1 emeralds.

After finding a mansion, you can hunt down an Evoker and let it summon Vexes. Then after defeating the Evoker, feed a remaning Vex beetroot. … This beetroot will turn the Vex red (the color of beetroot) and it will become friendly and start following you around while attacking for you.

They can be found leading illager patrols, captaining pillager outposts, and leading other illagers in raids. Killing a captain applies 1-3 levels of Bad Omen to the player, triggering a raid the next time the affected player enters a village.