Abilities that trigger whenever a creature attacks won't trigger when they enter the battlefield attacking
Chart shows the price of Switch #160 at the end of each month going back as long as we have tracked the item.
So we'll examine several cards that no Demon-tribal Commander deck would want to be without
After all, any self-respecting villain should have a way to turn the tables on those pesky adventurers traipsing through your lair, right
If you play multiplayer generally, Commander specifically, Highlander, Five Color, then you know the value of playing defense where you need to keep yourself alive to enact your plans
It requires some deckbuilding foresight since it needs both artifact creatures to sacrifice and noncreature artifacts to tutor for, but thats a deckbuilding requirement well worth building around when the card can turn your measly little Thopter token into a Bolas's Citadel or Portal to Phyrexia