Its palatable when the spell requires a lot of hoops to jump through to create that huge advantage, or the spell youre casting does some whacky stuff like Warp World
Fans poured money into 151 Booster Bundles , which climbed to over $200 each (thats $33+ per pack)
Scholar of the Lost Trove can work well too, in the right build
However, the Darksteel version doesnt show an otter transmuting a fish skeleton into a magic sword like this one does
For the cost of each color mana, you can give your creatures a ton of useful keywords haste, trample, and lifelink and an additional combat phase
One Shadowless 1st edition PSA 10 Charizard, for example, sold for $369,000 in December of 2020