Thanks, I'm basing it off people seemingly having a lot to say about Necrons and Masters of Evil and less about others.
Yeah, it's probably more about their consistency and focus on a central theme than on the actual overall worth of the set. I'll get into what I mean by consistency here:
So the Imperium deck was, loosely, an esper go-wide deck. The whole focus was on making a lot of dudes and swinging in. Squad as a mechanic gets introduced here, which fits into that go-wide theme. The two commanders,
Greyfax and
Calgar, work with going wide. Greyfax's investigate ability is a little odd, but the 1/0 vigilance aura is genuinely crazy good.
Belisarius has a slight artifact theme, but it works with the deck because you're makin' dudes and cashing in on 'em.
Severina introduces some aristocrats elements, but wants you to go wide for the first ability. Lots of riffs on that go-wide theme, different ways to approach it. Silly cards that are honestly not that good but which are hilarious to build around, like a
counterspell that also hits abilities and might just blast someone for 30 damage.
But then there's a bunch of shit that doesn't really fit. There's a
lifegain payoff reanimator card. There's
miracle cards without a way to stack the top of the deck (though one does at least go wide). There's a
reanimate life-gain card that has more colors than the life-gain payoff commander choice. There's a guy that cares about
manipulating the top of your deck to have instants and sorceries, both things this deck doesn't focus on. These are weird side-tangents that don't make the deck unplayable, but they're weird inclusions.
But then there's
The Flesh is Weak. This card pumps your team... when it comes down. And then? Then it permanently debuffs your deck.
There are
six cards in the deck that make 1/1 tokens. These tokens immediately die when The Flesh is Weak is on the field. It's a truly idiotic inclusion.
I do think there's potential for fun interactions with getting to bring back dead creatures as face down Cybermen.
Works great with Thassa 2.0 and Conjurer's Closet, as well as a few instants and sorceries with the "under your control" wording. You get to yoink their stuff, then flip them up without giving them back. It's also a very straightforward mechanic that's plenty powerful, whereas the other Who decks involve you dicking around with like 30 different things to get minor advantages until everything comes together.
The LOTR elf deck was ass even compared to Sauron.
That Scry theme was junk.
I still count it as a coherent deck because "just elfball" works even if you've also appended scry and voting to it, and for whatever reason colossal whale and hornet queen.
UG mainset Elrond is also a pretty nutty elfball commander, though that's less because you build around scry, and more because of the +1/+1 counter Leovold ability.
Well, and Sylvan Anthem is real good in that deck.