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This makes for an interesting build strategy, since you want a lot of two conflicting types of spells in your deck

Multiple instances of menace on the same creature are redundant

But the most busted aspect is that all this comes from a colorless card, so it can be leveraged by any deck with a handful of cheap creatures

Spark Double + Irenicuss Vile Duplication Spark Double and Irenicus's Vile Duplication are Quantum Misalignment but easier on the mana

These two were printed in Portal sets and then brought over to regular sets or Commander decks

Artifact Color tag templates(None) Artifact (CTRL to add secondary) Creature Qty: 17 Price: $75.65 Acidic Slime Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, destroy target artifact, enchantment, or land