Temporal Firestorm

A five-damage sweep that hits both players' creatures and planeswalkers without exception, sold with an optional escape hatch that has to be paid for outside red. The base spell is symmetrical: everyone's board burns, yours included. The kicker payments are what convert it into a one-sided reset, and each kick (in white, in blue, or both) phases out one of your creatures or planeswalkers before the damage lands. Phasing is the exactly right tool here, not just protection: a phased-out creature is treated as though it does not exist, so it takes none of the damage and returns on your next turn untapped and without summoning sickness, as if it had never left. The asymmetry is priced honestly through the color wheel. Red gets the destruction and pays a Jeskai tax for the survival clause, so every permanent you want to spare pushes you deeper into two off-color splashes. Kick once and a single beater walks through the fire; kick twice and you can shield a threat and a planeswalker together, at which point the spell stops behaving like a Wrath and starts closing games on tempo. The ceiling is a full three-color casting cost; the floor is a plain red sweeper you can always cast when the fixing is not there. Building the survival mode as a kicker rather than baking it in is what gives the card that range: a burn-everything button with a protection dial you pay for only when you can afford it.