Calciderm

A 5/5 for four mana that nothing can target, sold back to you on a four-turn lease. The trade is brutally legible: shroud means it dodges every targeted removal spell, every bounce, every aura your opponent might want to hang on it, but vanishing means it dodges you too. You cannot regenerate it, cannot pump its way past the clock, cannot blink it to reset the counters, because shroud locks out your own targeting just as hard as theirs. So you get four upkeeps of a body that outclasses almost anything in its mana range, then it sacrifices itself, no questions asked. The design is a clean answer to the oldest problem with cheap fatties: how do you let a color play above its curve without printing a permanent that warps the board forever? You rent the power instead of selling it. Vanishing handles the back end while shroud guarantees the front, so short of a sweeper, an edict, or a favorable block, the way to deal with the thing is to race it or chump it for four turns. The white casting cost is the wrinkle that places it: an untargetable beater this size reads as something green or red would normally get to keep, and the time-counter sunset is what lets white hold it at all. It is aggression with a built-in expiration date, which is exactly why it never needed an asterisk.