Velcro: polyester fiber
Unfortunately, since the card's included in the Commander banlist, and isn't you're unlikely to experience the joy of trading a treasure for a Blightsteel Colossus - though you're allowed to run a single copy in Vintage, if you've got the cash
The Backup Mechanic Lets take a look at the Release Notes for the backup mechanic, just to keep in mind exactly how it works: If a backup ability causes another creature to gain abilities, the creature with backup will still have those abilities
Factors influencing their value include rarity, condition, and the Pokmons popularity
The choice of the creature happens when the trigger is resolving, so there is no way to respond to that choice
Each box contains 1st edition, booster, and chase cards from the classic Base Set, with a chance of vintage packs in one of every five boxes