How thick of a card can these holders protect
In fact, I remember that while the variety of decks improved, there were so many of them that still decided to main deck cards that could prevent Dragon Ruler from playing
Baba Lysaga, Night Witch Baba Lysaga, Night Witch offers an incredible advantage if you can meet the stiff requirement of sacrificing three card typesmade distinctly easier with cards like Darksteel Citadel and Sanctum Weaver
How does this work
To get some of the best ETB triggers, you should cheat your green cards onto the battlefield with great mono-green cards like Natural Order, Pattern of Rebirth, Kona, Rescue Beastie, or Smuggler's Surprise
These two cards were clearly meant to be played in the same deck at top level with the idea being to get lots of energy into play quickly using Naganadel's ability "Once during your turn (before your attack), you may attach a basic Energy card from your discard pile to this Pokmon." alongside the Beast Ring, then use Blacephalon to OHKO everything