This card's artwork and effect reflect that of "Secret Sanctuary of the Spellcasters" and "Secret Village of the Spellcasters"
Even the Magic: The Gathering cards you dont think of can be worth a fair amount
However, its three notable chase cards that buoy this sets booster boxes to the lofty heights its market price reaches: Mox Diamond at close to $600, the first legendary Sliver creature, Sliver Queen, at $250 and recursion engine/nonbasic land Volraths Stronghold at over $80
This impediment mostly relates to getting new cards for your deck, as the only way to gain them is by dueling NPCs
You can't choose not to put one into your hand
All that proliferation is great for you since you can make Tekuthal indestructible by removing three counters from other artifacts, creatures, and planeswalkers you control