They also mostly have harmless effects in play: Greed in the black castle and Sylvan Library in the green (the computer spends all its life and mana drawing too many cards), Leviathan in blue (the computer will laughably strangle itself sacking its islands to that), Elder Land Wurm in white (trades with Juggernaut, fly over it with Hyppie, or just Paralyze it.) The scary one is Mana Flare in the red castle, which plays a little too well with the red decks powering up X damage spells
On the plus side, the two-and-a-half color decks are made extremely consistent thanks to everyones favorite cycle of commons: the five-to-six mana landcycling monster
Its hard to envision it now, but red wasnt always an artifact-adjacent color
In limited, this is exactly the type of card you want in your artifact deck and is so good that I'd basically put it into any limited deck that I run
On TCGPlayer , the Enchanted Yen Sid - Powerful Sorcerer is valued at $295
Planeswalkers are supposed to be exciting cards to open, but if Commander players are the primary audience for new cards, its very hard to make planeswalkers that really speak to them