You don't have to do anything when the effect activates if you have 3 or more cards in your security stack
On the other hand, Rosenkreuz, played by Seto, appears and makes an offer to the hero to join his side, the Yorkists
Their premium materials, superior shuffle feel, and celestial design make them an essential accessory for any Magic: The Gathering player or collector
Metagame Breakdown 89 Nekroz (56 Nekroz, 31 Deskbot Nekroz, 1 Atlantean Nekroz, 1 Herald Nekroz) 84 Shaddoll (687 Shaddoll, 16 Artifact Shaddoll ) 55 Qliphort 37 Atlantean (26 Atlantean, 10 Atlantean Mermail, 1 Artifact Atlantean) 28 HERO 15 Evilswarm 13 Tellarknight 8 Train 6 Dragon Ruler 4 Dragon Ruler Hieratic 4 Volcanic (3 Volcanic, 1 Artifact Volcanic) 4 Yosenju 3 Infernoid 3 Yang Zing 2 Ritual Beast 2 Bujin 2 Infernity 2 Prophecy 1 Artifact Chronomaly 1 Blackwing 1 Chain Burn 1 Cyber Dragon 1 Six Samurai Nekroz The limitation of Manju of the Ten Thousand Hands and Senju of the Thousand Hands saw Nekroz fill in with Mathematician
Here we also get a tease of expansions yet to come though in the form of Stormcast Vanguard, Khorne Blood Warriors, Fyreslayers, and Skaven