What it does
I'm not aware of "Psychic Blades" as an official Magic: The Gathering keyword or ability. It doesn't correspond to any printed keyword mechanic I can verify, and I don't want to invent rules text that could mislead you during a game.
It's possible you're thinking of a specific card name, a flavor ability unique to one card, or a mechanic from another game entirely. A few things worth checking: the exact card name (some cards have abilities that look like keywords but are one-offs), or whether you mean a similar-sounding keyword like a creature with menace, deathtouch, or a "blade"-themed equipment effect.
If you can share the card name or the reminder text printed on it, I'll gladly break down exactly what it does, the common rules pitfalls, and how it plays in Commander.
Iconic cards with Psychic Blades
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