Kookus

A drawback creature built around a leash. The body is a perfectly reasonable 3/5 trample with a firebreathing pump tied to it, the kind of stats that would otherwise read as a fine red beater. The catch is the upkeep penalty: without a creature named Keeper of Kookus on the battlefield, the djinn turns on you, dealing 3 damage each turn and forcing it into the red zone whether you want the attack or not. This is the old "needs a handler" template, a flavor-first mechanic built to express that a monster is barely under your control through a named-card dependency. The Keeper is the structural pressure valve: find it and you have a clean, aggressive five-drop; fail to and the card is a self-inflicted clock that also telegraphs every attack to your opponent. What makes the design uncomfortable rather than merely conditional is that the penalty is not optional and not preventable by simply holding the creature back; the upkeep trigger compels the attack, so even a poorly timed swing into open mana is mandatory. It is a two-card combo where one half is a 3/5 with a downside and the other half exists solely to remove that downside, an honest artifact of mid-90s flavor design that prized thematic coupling over raw efficiency.