Its not a weak card by any means but most players would probably recommend running any other eldrazi legendary creature as your commander without taking card prices into account

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The auto-equip is the real draw for this elf knight, making it much better to cast equipment from the top of your library than from your hand
It also looks like a Chaos Spacemarine got lost on Ixalan, which is kinda rad (as in radical, not rad counters)