The exiled card gains 'The player who controls the permanent that exiled this card may look at this card in the exile zone.'" Any player who has controlled a permanent with a hideaway ability since a card was exiled with it may look at that card
Akki Battle Squad Ballista Squad Battle Squadron Bomb Squad Catapult Squad Cybermen Squadron Dalek Squadron Daysquad Marshal EPF Point Squad Earwig Squad Faerie Squadron Fireflux Squad Haazda Snare Squad Howlsquad Heavy Longshot Squad Mandroid Squadron Maulfist Squad Mogg Squad Nav Squad Commandos Nightsquad Commando Pulsar Squadron Ace Ranger Squadron Referee Squad Resistance Squad Reveille Squad Securitron Squadron Silverwing Squadron Spiteful Squad Squad Captain Squad Commander Squad Rallier Squadron Hawk Suntail Squadron The Squadron Sinister Thopter Squadron Thunderhead Squadron Whisper Squad Wild Pack Squad
A mana is still pretty cheap and the ability to do it multiple times makes it a far better late game engine with things like the Carrion Feeder or Skullclamp
For , it can tutor a creature to the hand or any land to the battlefield tapped, or act as removal for artifacts, enchantments, or creatures
Wizards of the Coast provided CNET with sample products, and Ive included images of some of the cards featuring these mechanics
I could see a version of a spells deck that uses these cards, especially with a meme-y style, like a full-on Universal Horror Mad Scientist Laboratory thematic