Like most Magic: The Gathering cards, the value of Aragorn, Hornburg Hero depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Tales of Middle-earth Commander)
Plus, with most of the Secret Rares (Ultra Rares, Illustration Rares, Special Illustration Rares, and Hyper Rares) having nearly identical pull rates, the main factor that could drive up a cards value is consumer demand
Generally, theres 1-2 showcase frames per set, whereas almost all sets have borderless versions of rares and mythics found in Collector boosters
Its no Treasure Cruise but this is a monster card
Summon Primal Odin - Artwork I made for MTG X Final Fantasy
He's also an 8/8 flyer for 8 mana, with another powerful activated ability