Invasion of Ulgrotha // Grandmother Ravi Sengir
A name older than most of the mechanics it now uses: the Sengir vampire dynasty out of old Homelands lore, grafted onto a modern grow-and-gain engine. The back-face trigger is precise about whose losses count: not your own creatures, not what you sacrifice, but specifically the bodies across the table, whether they fall to combat, to removal, or to their controller's own sacrifice outlets. Each such death adds a counter and pads your life total, so an evasive flyer swells every time an opponent's board erodes for any reason. That opponent-only clause is the leash on the engine: it rewards you for grinding down the people you are pointed at, not for feeding your own board into the meat grinder.
The Siege that flips into her is a burn spell bolted to a permanent someone else has to defend: three damage to any other target, three life for you, then a battle that enters begging to be knocked down. When it resolves you designate a defending opponent, the one player barred from attacking it, so the flip hinges on the rest of the table (and you) cracking that defense. One side stabilizes a life total and applies immediate pressure; the other converts the table's attrition into a self-enlarging threat that gains life as the board thins.
