Chandra, Awakened Inferno

The uncounterable clause at the top is the whole strategic proposition: this is a six-mana planeswalker built to be immune to the interaction that answers six-mana planeswalkers. Control decks live by holding up counterspells for exactly this kind of top-end threat, and this one simply does not care. What it does after resolving is where the design gets patient. The +2 emblem is not a clock you build; it is a clock that cannot be turned off. Each opponent takes one, then two, then three, then more per turn as emblems stack, and nothing short of a life-total reset undoes them. Against a deck with no way to pressure the planeswalker, that is a guaranteed kill on a timer, delivered from a threat that also protects itself by ticking down to sweep the board or exile-burn the biggest problem creature. The −3 clearing every non-Elemental creature (a small, characteristic wink at Chandra's own tribe) makes it a defensive tool that stays online while the emblems do the closing. The −X mode's exile clause matters against the recursion and death-trigger creatures that ordinarily ignore burn: damage dealt this way removes them for good. Taken together, the card is engineered as an anti-control finisher first and a midrange stabilizer second, a top-end designed to be the one thing a permission deck cannot say no to.