Oh and I guess theres Glen Elendras Answer, but its really a win-more kinda counterspell for Commander
Gandalf the White Gandalf the White acts as a slightly limited Panharmonicon and also allows you to cast lots of spells with flash
And I dont think this line of thinking is far-fetched: breathing clean air costs what now? Vote with your wallet and not breathe. Pokemon cards are admittedly not essential (even remotely similar) as air but the thought still holds
Time and mana investment lands which require you to invest mana in them over a series of turns for them to function
For instance, Patchwork Beastie will be able to attack, Impossible Inferno will exile cards off the top of your library, and Scuttletide will give Crabs you control +1/+1
Thought Monitor is at best a 2/2 flyer that draws extra cards on the cheap, and we've already got so much card draw from Clue tokens that we probably don't need to spend a card on a dedicated card drawer