If forgetting to draw was advantageous to the erroring player (example: the player is near burning out), this penalty is a [Warning] instead.
§ 702.4.b Tournament Rules PDF (officieel)
§ 702 Game Play Errors
§ 702.4 Forgetting to Draw Cards [No Penalty]: A player is obligated to draw a card, either as part of their draw phase or instruction from a card, but fails to do so.