Arashin Sovereign

The death trigger is recursion built on patience rather than immediate value: instead of returning to hand or the battlefield, the dragon buries itself in the library, top or bottom at your choice. Sent to the top, it guarantees you redraw a 6/6 flyer next turn, turning one creature into a slow-rolling stream of threats that grinds an opponent's removal supply down to nothing. Sent to the bottom, it dodges a mill plan or clears the way to dig for a specific answer when the top of your deck matters more than another haymaker. This is design aimed squarely at attrition: a body that costs the opponent a removal spell to kill, then asks whether they have a second one ready for the rematch. The recursion is not invincible, though, and that matters to how you sequence it. The trigger fires on death, so the dragon does pass through the graveyard, where instant-speed graveyard hate can answer it in response; exile-based removal sidesteps the whole loop by never letting it die at all. What it shrugs off is the kind of punishment that assumes a creature returns to hand or yard for value: there's no card to bounce, no body to disrupt, just a deck that quietly grew one threat thicker. The cost of all this is the rate. Seven mana for a flying 6/6 with no enters-the-battlefield payoff is a steep entry, and the self-recursion only earns out in games long enough for redrawing it to count.