[quote=@Eklispe]
Into The Breach is really strong with no targeting or destroying :<

Also for chaos emissary lux, is the effect negation for one turn, while the card is faceup on the field, and does it also negate the target's effect while it is in the graveyard?
[/quote]

You can't use it unless you have CE's in the deck, and they need a way to keep the grave stocked. Just run Dimensional Prison for other decks.

Also, that's basic rulings. If it says 'Negate target effect', it's effect is negated as long as it remains on the field. In the graveyard it's treated as a new card, ergo you can activate the effect. This applies to when it's flipped face down and then back up again too, it'll have its effect again.

EDIT: Let me take a step further. If you're really concerned about non-targetting, non destroying removal on a direct attack you're better off running Drowning Mirror Force.