User blog comment:Bnoah23/Deck Opinions/@comment-24965906-20150322133339/@comment-24965906-20150324015527

Merlin went from 3 copies to 1, so you removed some copies of him, sorry. That is not a wise decision, and I've already explained why Merlin is important in that deck. Even with Salvation Eir, it won't be enough. Don't worry, deck choices come with practice...

All these other advice are problems I've noticed. If I had skipped a deck, it is either I have not seen any problems beyond little nick-picks, so the deck is quite alright, or someone else talked about it. Oh, and this critique below is optional. It's really to push your deck to be as best as I think it can go without me pushing my own ideals onto it. Deck-building is yours, so don't be afraid to make your own choices, just be able to explain why you choose things when asked.

Sieger.dek - The Dragonverse...see, this card is tricky. Yes, there is a Life increase. However, the goal of an effective Sieger deck is to have Sieger survive everything, and Dragonverse only works when a card with Lifelink enters. Using logic, if you use Dragoverse for the Life gain in a Sieger deck, it means that you are rushing towards Tempest Enforcer, which is an insta-kill on removal. In other words, you'd be playing the deck dangerously and wrong. Therefore, you keep Sieger on the field, and the card will be holding space. Which is why I advised Wrath Trigger.

Hell Dragons - Increase number of Battle Aura Circle.

Grim Reaper's Resolve - Here's your problem. For Black Dragons, it is fine to do that whole field clear thing, however, for Death Rulers, having monsters closed is the point. They are meant to bypass your opponent's defenses. Just keep that in mind.

Solitary Black Knights - Looking good. Hmm...I'm wondering about Guillotine Cutter. Because the Black Knights deck is meant to be defensive, so no damage is dealt to the fighter, and because of that, Guillotine shouldn't see much play. How does it work for you, it's up to you to test and see if it works for you.

Dragonic Fusion - Items...so many items...Look, pick 8 copies of any items. It could be any combination, but a good bench mark for items, unless it's like Legend World's Heroes, is 6-8 cards. But you shouldn't choose Dragoraptor, the 2 gauge conflicts with Gargantua, even with Dragon Return System gauge charging etc.

Buster Cannon Tribe - Okay, not bad. Gargantua Blade Dragon though. See, you have 4 Items...4 Weapons I should say. And Gargantua Blade Dragon could work. But honestly, I'd place him into Dragonic Fusion instead, at 2, while increasing the number of General Boldness, as most of your monsters are S3, and you have a large number of Weapons in Dragonic Fusion for Gargantua Blade Dragon to use.