For seven mana, you get a 7/7 with flying that allows you to create Treasure tokens equal to the combat damage your Creatures do to a player
The card doesn't seem to care about numbers, stating that the dragon is so strong, that not even ghosts would survive against it
[Fishing Lessons - Pondering Brainstorm]( by AJ Sacher [Legacy Weapon - The Depth of Brainstorm]( by Caleb Durward [There are Three Ways to Play a Brainstorm]( by Paulo Vitor Damo da Rosa [A Primer on Brainstorm]( by ChairYeoman I found all of these articles extremely interesting reads, and I feel like I learned a lot from them (enough that I wanted to share it with you, in fact)
Numerous people have used this to their advantage, and print out large AR cards that they use to take photos of giant Miis
When Refurbished Familiar's last ability resolves, the next opponent in turn order (or, if it's an opponent's turn, that opponent) chooses a card in hand without revealing it, then each other opponent in turn order (if any) does the same