>>2588931Read Red-Eyes Fusion, a card you yourself posted. Hint: the flaw is very obvious. And no, an inconsistent FTK does not mean the deck is not shit.
>>2589105Dual Terminal archetypes have a good chunk of lore (look up the Master Guides for that), other than that there's not too much outside of what's told in the card art of stuff like Marauding Captain and Gagagigo, Ha Des, and a good few others.
There's a fairly long list of DT archetypes so I won't list them all but there's stuff like Qlihports, Nekroz, Infernoids, Ice Barriers, Gusto, Fableds, and Genex.