Cantrips like Serum Visions, permanents with ETBs like Witching Well, Momo, Playful Pet, and Dream Beavers, begin to feel like full advantages with enough scry payoffs in the deck
One of the better and more efficient effects that lets you look at your opponents hand and do something about it, but its a weird amount of control to have on such a cheap card
While you might find some bargains for cards, particularly those in lower-tier conditions, most of the best cards from EX Deoxys are rare and expensive
If a checklist card is used in a deck, the card it represents is set aside prior to the beginning of the game (see rule 103.1a) and must remain available throughout the game
In a lot of other situations you have to be very careful with what you clamp, shaving off just one creature every couple of turns so as not to lose momentum
At the start of your main phase, it lets you dig through your deck and impulse draw cards based on how many colors you control