Showstopper

The combat math this rewrites is the part worth dwelling on. Normally a board of small creatures trades into bigger ones at a loss; here, every creature you control turns its own death into a Shock aimed at an opposing creature. Block with three 1/1 tokens into a 4/4 and you have not only chumped, you have dealt six damage spread across your opponent's board. The instant-speed window does the heavy lifting: cast it after blockers are declared and damage is locked, and the deaths from combat all carry the rider, or set it up with free sacrifice outlets to fling a wave of triggers at a moment of your choosing. It is a payoff built specifically for the wide, sacrifice-leaning Rakdos archetype, where token generators and aristocrat instincts turn a temporary buff into a one-sided clearing of the board. The cost of that ceiling is its narrowness: with one or two creatures it is a clumsy, overpriced removal spell that asks them to die first. It needs a battlefield already tipped toward bodies you do not mind losing, and it does nothing the turn you fall behind on creatures. The buff is also fragile in the wrong direction; lean on a symmetrical sweeper and your creatures die alongside their targets, leaving the triggers nothing legal to point at. As a design, it is death-as-resource compressed into a single instant, asking you to want your own creatures dead at exactly the right moment.