Sunscorch Regent

A 4/3 flier for five mana is an unremarkable body; the trigger stapled to it turns the opponent's whole game plan into fuel. Every spell the other side casts grows this Dragon and pads your life total, inverting the usual pressure of an aggressive or combo-heavy opponent: the more they try to do, the larger the threat they have to fight through and the further out of burn range you climb. It taxes tempo and storm-style decks specifically, because those archetypes win by chaining spells, and each cast feeds the very thing racing to close on them. The design is a passive levy dressed up as a beater, sitting in the same family of "opponent acts, you profit" white aggro-control finishers, but keyed to card velocity rather than attacks or creatures. Crucially, the trigger keys off casting, not phases, so it fires on your turn too the moment an opponent responds with an instant, and a countered spell has already grown the Dragon by the time it fizzles. The restraint lives in the counting: a single spell per turn only inches the counters up, so an opponent who paces themselves keeps the scaling shallow even as the Regent slowly climbs. That linear feed is what stops it from oppressing fair, one-threat-at-a-time matchups while making it a genuine wall against decks built to burn through their hand: it converts an opponent's forced activity into your clock and your cushion at once.