Only the artifacts that it tried to tap when the ability resolved are prevented from untapping. Artifacts that enter after that or permanents that become artifacts after that are not affected.
04-10-2004
wotc
Note that you can't choose to leave this card tapped during your untap step (unless some other effect says so).
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
, 
: Tap all other artifacts. They don’t untap during their controllers’ untap steps for as long as Kill Switch remains tapped.
