While the rarity of the card is likely one of the main reasons for collectors mad dash, it also plays into the larger cultural phenomenon surrounding The Lord of the Rings
I advised against Primal Frenzy in an earlier article
Emrakul, the Promised End + Ulamog, the Ceaseless Hunger Eldrazi are, by nature, annihilating world enders, which is a spooky premise itself
Being able to flip a 15/15 Worldspine Wurm up is a great party trick, but there are other great cards in here like Ashaya, Soul of the Wild, and Aesi, Tyrant of Gyre Strait
Bloomburrow added Clement, the Worrywort as an alternative frog commander
A few less successful board game adaptations of specific Tomb Raider video games followed, with the more modern Tomb Raider Legends published in 2019 perhaps being the most successful of them all in terms of its design