Quote Originally Posted by Troacctid View Post
I don't see why metamagic shenanigans are something a boss ought to care about--he's an NPC, you can just make him higher level or make up abilities for him or have him research a mass polymorph spell.
Because I generally prefer to stick to the book when it comes to build worlds and encounters. Moreover, even though this boss fight is hypothetical, as me and my players enjoy doing mildly optimized arms races I've come to the point where I see DM-fiat more like cheating than "bending the system to the law of narrative causality".

Quote Originally Posted by Troacctid View Post
Anyway, I'd have the minions surround the PCs. That way any AoE effect that would hit all of them is also overwhelmingly likely to hit the party too. It also constrains their mobility as an added bonus.
Oh, right. How could I possibly forget about this? It's both simply and effective. Thanks!

Quote Originally Posted by Miss Disaster View Post
I just wanted to give you big props for suggesting Chain Suppress Magic tactics. Using this spell in the right campaign can be outright devastating. Especially if you have the character or NPC with a sizable about of Essentia to boost it. Which helps to scale the spell's usage well into middle levels.

Since PCs tend to be more overloaded with magic items than NPCs, enemy spellcasters who chain Suppress Magic should be able to massively debuff the hell out of the party with a various minor spell level investment.
I like big props!
I only recently discovered Suppress Magic since I rarely use Magic of Incarnum, but one of my player decided to play a Totemist so I had to skim over it. I find Suppress Magic very useful even without much (or any) essentia because while you can't use it to dispel buffs from spells as Dispel Magic, Suppress Magic doesn't have a cap to the dispel check and is a level lower. However, if you have Reserves of Strength and immunity to stun effects (Talisman of Undying Fortitude, Banner of the Storm's Eye, being undead/a construct/an elemental), Dispel Magic is probably all-around better.