#6 shadow63 no it's not at all
You could discard it to pay a cost, because a spell or ability tells you to, or because you have too many cards in your hand during your cleanup step
Bonus sheets from previous sets sometimes have a unifying mechanical theme (in Outlaws of Thunder Junction , for example, all the cards from the Breaking News bonus sheet could commit a crime), but there's no specific mechanical thread connecting these Through the Ages cards
You also get an extra two-card collector Booster Sample Pack that contains 1 special treatment card of rare or higher and at least 1 Traditional Foil Retro-Frame artefact card, so you get a bit extra for the 40 this costs: The Brothers War Retro-Frame Commander Deck - Urza's Iron Alliance- 40 at Amazon The Brothers War Retro-Frame Commander Deck - Urza's Iron Alliance- $48 at Amazon US Battle for Baldur's Gate Commander Deck - Draconic Dissent This one had to go in because it's all about Dragons
That aside, I always loved the ebb and flow of Bounty of the Luxa, and putting that kinda mechanic onto a creature is a lot of fun
