- This card's cost of 1,000 Life Points isn't stated in either version of the anime, which can confuse some viewers as to how Kaiba lost another 1,000 Life Points when he activated this card.
- Part of this card's name ("Lullaby") is very unfitting based on the artwork, it is unknown why "Lullaby" was chosen.
- From an open-minded viewpoint, judging strictly by the the authoritative, godlike stereotype featured in the artwork of this card, coupled with its highly suggestive name, one could assume that this card was intended as a pun or even a mild criticism to a single common attribute nearly all religions share; that would be, naturally, the strict conformism to a set number of values or customs, expertly disguised as pious and undoubted wisdom (or in this case, "a lullaby of obedience").
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