mtg scars of mirrodin booster box Block Boxes (Empty Without Packs) ~Oasis~ Galvanic Blast doubles in damage from 2 to 4 Magic the Gathering - MTG:

It gave them an unfair advantage over their opponents

When all players decline to do anything more and nothing is on the stack waiting to resolve, the game will move to the next step

If someone casts a mass exile spell, such as Farewell, phasing would be one of the only ways to protect your board

On top of that, it sports the incredible art of the Mewtwo getting ready to attack Charizard

Edit: Just read that your post says ones given away with purchase, so maybe you dont want to include this one in your list

The card lets the player with the lowest life points draw a card so people stacked their deck with this card and used this effect to draw out Exodia