base unlimited booster box Sealed 1999 Set (Blue Wing) sells for $31,250 on Heritage Auctions : r/PokeInvesting Booster Box Prices | Pokemon

They often bring along a new tool for Standard, and can directly impact the metagame

My first pick would be combat tricks

The only exception is where the set has a theme and, while that effect would normally be narrow, it's not in that particular environment

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) Sometimes violent earthquakes, hurtling boulders, and unseasonable dust storms are wrongly attributed to the Roil

15 cards also available as Collectors Rares

Following his reveal yesterday of the Legendary Spider creature, Magic: The Gathering Head Designer Mark Rosewater has another card to share with players