If the card continues to increase in value, there's no telling how much it may be worth in the future
If I have two Topsy Turvys in play, what happens
Companion Games produced the Galactic Empires CCG (the first science fiction trading card game), which allowed players to pay for and design their own promotional cards, while TSR created the Spellfire game, which eventually included five editions in six languages, plus twelve expansion sets
Many artifacts do nothing on the battlefield, but are played for their effects, such as Ichor Wellspring
Check out all the Commander Masters precon upgrades here: Sliver Swarm is a five-color deck that is all about Slivers, a creature type where each member brings a unique buff to all your Slivers, from granting them all flying with Galerider Sliver to drawing cards with Synapse Sliver
While not quite as pricey as something like the Base Set Charizard, Blaine's Charizard still commands a hefty price tag of over $500 ungraded, and a far higher one of $4,000+ at PSA 10