That ability is "When the last defense counter is removed from this permanent, exile it, then you may cast it transformed without paying its mana cost." (4/14/2023) As a Siege enters the battlefield, its controller chooses an opponent to be its protector
Show Results Blood of Gladiators Loot Cards Foam Sword Rack (1 in 242 packs) Redeemable for Foam Sword Rack Center of Attention (1 in 121 packs) Redeemable for Epic Purple Shirt Sandbox Tiger (1 in 11 packs) Redeemable for Sandbox Tiger Blood of Gladiators Expansion Set Info Released: March, 2009 Booster Packs: 24 Blood of Gladiators expansion on Amazon: Search Amazons inventory for Blood of Gladiators booster packs and boxes
However, despite the lack of dragon cards, it has plenty of potential since it can repeat this effect as long as you keep drawing dragons
From memory Shadowspear was around five USD the first few weeks after THB released Because of its relevance in the Theros story arc, I think were mainly going to see it getting reprinted in supplemental sets or universes beyond sets because reprinting it in Amonkhet or Lorwyn would make little sense
Its even a budget-friendly card since it sees frequent reprints in Commander precons
