Whenever another permanent leaves the battlefield, put a +1/+1 counter on Super Shredder.
Deploy Super Shredder early as a 2-mana evasive threat, then churn permanents through the graveyard—sacrifice fodder, tokens, fetch-style lands, and edict effects—to pile +1/+1 counters on it fast. With menace plus a couple pieces of evasion or trample, it becomes a one- or two-hit commander-damage kill while you also grind opponents out with aristocrats value.
Cheap, evasive commander that grows on its own with almost any board interaction
Counts ANY permanent leaving—your tokens, opponents' creatures, lands, enchantments, even your own sacrificed pieces
Synergizes with mono-black's deep aristocrats, edict, and reanimation toolbox
Snowballs quickly, threatening commander-damage kills by turn 4-6 in a focused build
Highly removal-dependent strategy that loses tempo every time Shredder is killed (counters don't persist)
Mono-black means weak enchantment/artifact interaction and no protection from blue counters
Voltron-style plans fold to a single Swords to Plowshares, Path, or fog/board wipe
Without trample, big blockers or token chumps can still wall the menace attack