Chromium, the Mutable

The Elder Dragons of the original cycle were summer-camp fixtures: huge, expensive, and saddled with an upkeep tax that made them more conversation piece than win condition. This reimagining keeps the body and the legend status but rebuilds everything around evasion and slipperiness. The uncounterable clause and flash together mean it lands on an open opponent's turn no matter what they hold, and the body it deploys is a flier that demands an answer the moment it resolves. Then the discard ability inverts the whole proposition: spend a card and the seven-mana flier becomes a 1/1 Human with hexproof that no longer flies, no longer matters as a threat, and can't be blocked. That last mode is the real design statement. Most protection abilities ask you to keep the creature relevant while shielding it; this one trades the entire stat line away, accepting that a 1/1 unblockable Human is worth more than a dead 7/7 when removal is on the stack. It converts the dragon into a chip-damage clock and a removal-proof body for a turn, then snaps back to a 7/7 at cleanup. The friction is the discard: every defensive activation costs a card and a damage step's worth of board presence, so the ability rewards holding a dead card rather than spending it on tempo. It is the rare top-end finisher built to survive interaction by becoming the thing interaction doesn't care about.