Belbe, Corrupted Observer

Ramp scaled by aggression, handed to the whole table. The trigger keys off any opponent losing life, then makes colorless mana equal to how many of them bled this turn: one player who took a Bolt is two mana, three players softened by a board-wide drain is six. The wrinkle is who gets it. The active player adds the mana, so Belbe pays out on everyone's turn, not just yours. That turns a two-mana body into a shared engine with an asymmetry problem, because you decide what to build around it and your opponents mostly don't. In a group-slug shell that pings the table every turn cycle, the controller of Belbe converts other people's life totals into a colorless flood that fuels artifacts, X-spells, and eldrazi with no color commitment. The catch is that opponents get the same fuel on their own turns, so the card rewards a deck built to spend faster and heavier than the people it's feeding. Colorless mana is the deliberate limit: it ramps volume without touching the black-green identity around it, keeping the payout generic enough to hand out safely. The name references a Phyrexian figure from Rath's plane, but the design is pure aristocrat-adjacent economics: it prices life loss in Wastes-flavored mana and lets the pilot who most wants the table to bleed profit most from making it happen.