yugioh diabound kernel deck Card "Diabound Kernel" 20AP-KR003 Korean Ver Ultra Parallel Rare Diabound Kernel (anime) | Yu-Gi-Oh!

I wouldnt say its useless in Constructed play, but I dont really see it being anyones first choice unless youre specifically building around adventure cards

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But while Mishra and Urza require tons of mana and likely arent melding until turns five or six, if not later, Titania, Gaea Incarnate could hit the battlefield by turn four in a deck designed to funnel lands cards quickly into graveyard on the first one or two turns before the 3-mana creature is cast

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The one wrinkle for beginners is that five-color mana base, but the Draconic Domination preconstructed deck handles all of that for you out of the gate