Give boss a couple of brutes to give something to banish

A well-designed monster’s lore informs its rules, and its rules should hint at its use in encounters

Understand the offensive and defensive capabilities of the characters

Monsters are meant to be pieces of a whole in combats

Giving a monster you create a fly speed can make it very powerful against lower level PCs

DMs: when you create an obstacle for player characters to overcome, do you think of a solution first?