You can't look at face-down spells or permanents you don't control unless an effect instructs or allows you to do so
Affinity An ability that reduces the cost of a spell depending on how many Equipment, Towns, orBirds you have in play
Other players dont realize that the activation of these kinds of traps and the activation of the effects themselves are two separate actions, and will flip up a continuous trap like Ultimate Offering and attempt to use its effect as one link in the chain
Evil versions of Elemental Heroes Bubbleman and Prisma are coming, and the Supreme King's new version of Neos, which has the power to take over your opponent's monsters
Cards like Harmonizing Magician , Performapal Pendulum Sorcerer , and Pendulum Call are also designed to bring the necessary monsters from your deck, Graveyard, or Extra Deck into your hand