Some pure faction delve teams’ troops have great synergy with each other. This is not one of those teams. Nothing about this team works well. Let’s do a troop breakdown:
Doppleganger: Transform into an Enemy, and Curse them.
I don’t know under what circumstances you would ever want to play this troop outside of the Delve. The only reason you need it in the Delve is because, for Renown, you need to start with only Mirrored Halls troops, and because the Mirrored Halls troops suck so much, you want to turn them into other troops. That’s the gist of it. I mean, am I wrong? Is that not exactly what it does? You run this troop because you want to copy an enemy troop? Because if you could run any other troop except this, you would… and then what’s it do? It curses them. Why? None of the other troops do anything that interacts with the enemy troops that requires them to be cursed. There’s not a single trait or ability on any of the Mirrored Halls troops that says “Ah, the enemy is cursed, great, now we can do the thing.” Nope. It just curses them, because, more text. It’s “Stealthy” and immune to Silence I suppose because you don’t want your opponent to kill it, lest you turn it into a usable troop.
Copycat: Summon this troop, then summon this troop again, then summon this troop again, then summon this troop again. It refills with a combination of 11 or 12 green mana, and hey, look at that, it makes 10 of those gems! What else does it do? Well, I’m not sure, because you only get to use this when one of your troops is dead. Up until then, you just use it literally to create 10 gems. It doesn’t do anything else before that. It reminds me of Pyggra which creates 5 red gems then explodes red gems then has a chance to summon himself. At least he isn’t part of a delve team. Next!
Glass Golem: There are seven Defender Delve troops in the game right now. I believe the first one was Arcane Golem and it stuns enemies. Damage from skulls reduced by 50% but also it came out when Spell Armor was becoming a thing, so it has 25% of that. It gains Attack with its ability. Green Golem entangles and gains life, also 50% skull reduction. Hammerclaw also 50% skull reduction, gains life, conditionally gains minor attack, explodes a row or column. Mushroom Man is interesting because, while he only reduces skull by 33%, he does gain a lot of attack AND Enrages himself, allowing him to completely ignore enemy traits and deal massive skull damage. Wild Knight also only has 33% skull damage reduction, but gains life and attack, AND Barrier. And then Bone Golem explodes a gem and gains Attack and armor and puts death mark on enemies, with 50% skull damage reduction.
Then there is the Glass Golem. 50% skull damage reduction? Nope, that’s too much. 33%? Hah! Try 25% sucker! Oh uh, what’s he got to make up for that? Death Mark? Stun? Entangle? "Nope, we’ll reflect 50% of damage taken, which will be great since you’ll be taking MORE damage from skulls than other Defender troops, thereby doing more damage with your reflect! Oh cool, uh, does he gain attack then? Enrage? Hunter’s Mark? Stun? Entangle? Nope… he just gains armor, yeah, but he’ll gain WAY less armor than the skull damage he’s taking. “He’s our worst Delve Defender to date. We’re pretty proud.”
The Mirror Queen: If you thought worst Defender was the only thing up for grabs, I’ve got a surprise for you, because Mirror Queen is the third, and worst, Delve Assassin to date. There are only two others: Gargoyle and Bladewing. Gargoyle hits like a truck because he scales his damage (50% splash damage mind you) with all allies attack. The more attack you have, the more damage you deal. Coincidentally, that’s also why Halls of Guardian is impossible to do a pure faction attempt with outside of events, because the enemy Gargoyle will literally one shot your troops. Then there’s Bladewing who, under a Storm, can literally just kill a troop, 20% chance. Lethal damage, nothing you can do about it. So Mirror Queen must be pretty deadly right? We went from colossal scaling splash damage to chance at lethal to… capped boosted single target. Yep. You hit a single enemy with a cap of 32 bonus damage (8 per Reflected Ally). Oh, and you have a huge chance to summon a copy of that enemy that you’re trying to kill, so make sure you’ve lost a troop of your own to make room. And make sure you match some 4+ gems too so you can get Reflect on your allies, and let them get hit so they can deal damage and you can summon more troops. Err, but wait, if you have a spot free to summon an enemy, that’s also 8 less bonus damage Mirror Queen is doing… and it means you were down a troop at the beginning of your turn… but I’m sure you did a TON of reflected damage to the enemy team!
Seriously, this was painful. It managed to clear the delve with a pure faction team with 3x potions of power at level 310, but at 500, I just gave up after a few attempts, because it was pointless. 15 minutes would go by in a single battle and I would just be summoning copies of useless troops waiting for something to happen, or the enemy would be looping summons of Copycat. How dumb.