Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel

Death is a resource here, and the front face spends it two ways at once. The 3/3 turns creatures dying into a slow drain (one lost, one gained per death), while doubling as its own fuel: sacrifice on entry and again on attack to keep both the corpses and the cards flowing. The clever part is that the flip is not a survival hurdle but the plan. Four death-drain resolutions in a single turn transform the card, which makes hitting that count a genuine deckbuilding constraint rather than an incidental milestone. Reach it and the reward is durability, not size. On the far side, the drain stops being a creature ability and becomes an emblem, so a board wipe or a sacrifice loop closes the game instead of resetting the engine, and removal aimed at the Angel no longer touches the win condition. That emblem is the load-bearing piece of the whole structure: it converts a fragile, incremental aristocrats package into a permanent one. The transformed attack trigger drops the restraint entirely, letting you empty the board for cards, though by then the sacrifice is mostly redundant insurance on an engine that already runs without it. What looks like two separate cards is really one aristocrats plan with a threshold in the middle, promoting a grindy drain outlet into something the opponent can no longer answer at the source.