Laws are not created by the commission. Laws can be proposed by the commission, but must pass an unanimous vote by the council (made up of a representative of the government of every country) and pass a qualified majority vote in the EU parliament.
The council also uses qualified majority voting and has done for nearly a decade.
The Commission is the sole source of legislation. The Council cannot change EU law against the will of the Commission, so in practice it's a rubber stamp body that just always votes yes to everything.
This is what I'm saying in another comment: HN is flooded with incorrect claims about how the EU actually works, always in the direction of making it sound more accountable than it actually is.
