Second, the most-played sweeper effect in Standard currently is Languish, and even indestructible creatures can have their toughness reduced to zero
It has 9 power to draw a bunch of cards in a Jenova, Ancient Calamity deck, and its ceiling could go higher if we get mutant payoffs in future Marvel sets
Sweep the board on your main phase and then drop a dork and it'll survive
Austere Command A strategic reckoning, shattering what is unnecessary and preserving what is eternal
For each nonland card milled this way, you lose 1 life and a rad counter." Chris Mooney developed the details of rad counters to make you lose life in a non-deterministic way
in fact, Safer-Sephiroth, the final boss of FFVII, has a secret mechanic where if you used Knights of the Round on Jenova (a fight before his), he gains a whopping 80k extra HP so you won't one-shot him too