Whenever you show an Evidence Card to a player, you create a Treasure token, which is a nifty game feature that helps fix your mana in case you end up with a four-color deck
Notably, this means a Siege's controller can attack it
Update 1/17 8:05 am PT: Additional launch territories and accessories added to the article.
Five mana is certainly not cheap, but its pretty strong to be able to pop a Jace, Architect of Thought or a Stormbreath Dragon on the way down and threaten to generate further advantage or even win the game on its own if left unchecked
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
Ironically, this is really slow and clunky despite granting Haste