magic the gathering prophecy booster box : Play Boosters are the ideal booster for the play environment—especially Limited format events Magic: The Gathering Prophecy Sealed

But when cards like Gift Card exist, which just give your opponent 3000 Life Points they may not have a choice in the matter

Make the most of online promotions taking place the week of Worlds at the Pokmon Center, and pick up a Pokmon Trading Card Game celebratory promo card featuring Pikachu as a gift with purchase with the code worldscard25us at checkout

If you have five planeswalkers on the battlefield with Ichormoon Gauntlet out, you can proliferate the charge counters and +1/+1 counters on sunburst cards five times

They did say that the cards found in each set have a possibility of appearing in other ways in the game, just in case you missed out

If a "Performapal" or "Odd-Eyes" monster you control attacks, your opponent cannot activate any Spell/Trap Cards until the end of the Damage Step