pokemon heartgold soulsilver booster box & Alchemists Refuge is an online retailer that specializes in Magic the Gathering Should I open it? :

Those not listed are either unlocked from the start, or unlocked by progressing through Story Mode

Secret Lairs are a great way for Magic to play with flavor text, turning a card that was dead serious in its original printing into a fun alternate printing, allowing the serious to mingle with the unserious

That permanent gains Haste, When this permanent leaves the battlefield, it deals damage equal to its mana value to each creature, and At the beginning of your end step, sacrifice this permanent. Terminal Velocity is a bit of a mish-mash of different effects

When Meteor Golem enters the battlefield, destroy target non-land permanent an opponent controls

I guess Scars of Mirrodin was probably still in development at the time