A solid card, and often a sizable mana advantage since your opponent has to pay just as much as you did to account for the Seal, as well as whatever spell or ability they're using to remove it
For example, you could tap an Elf Wizard and a Human Warrior to put an Elf Warrior card onto the battlefield
This is especially common with Link monsters, as many of the game's most powerful link monsters have generic requirements to be summoned, making them easy for a variety of decks to make
You can play some pretty advanced mind games with your opponent and try bluffing them into choosing your worst cards to shuffle away, or do what I do and just dont run any bad cards
For each card type among those, you can put one card of each revealed type into your hand
As part of that product, there are new oil slick raised foils and one more Phyrexian-language card in addition to the six found in Phyrexia: All Will Be One boosters