I get the idea, just seems to be a little lacking. It has some definite potential though.
Some ideas:
I think it could be good as a permanent, thereby forcing them to play at least 2 cards every round.
Another interesting addition would be to drain life (maybe 3 or 4) if the player does not have enough cards in their hand. (or chooses not to)
E.g. play 2 lures vs opponent with empty hand would cause 9 life to be drained (4 need to be played, they get 1 from draw = 3 card deficit, assuming 3 life drained per missing card). This makes it a sort of "counterpart" to complement nightmare. Its cost and damage potential put it right on par as well.
From a coding point of view, I think it may be hard to force players to play cards, but tracking how many have been played and dealing damage for the deficit should be fairly trivial.
Another interesting twist. Heal the player slightly if they play the number of cards needed, but drain life if they fail to play enough. This seems to fit both a lure and frustration theme very well.
This would make a very nice combo with nightmare and dune scorpion.
-> Force them to drop their hand, then load them up with useless junk while inflicting moderate life drain and neurotoxin buildup. This could make these decks a very serious threat.