How about:
Might be the most swingy card I've played with.
it either does nothing with the vast majority of your cards or is oppressively good with the others
That is a fantastic point. These might be a good consideration for anyone explicitly trying to push 2 color decks because they play better when you have ~14-16 on-color basics in your deck, and play a lot worse when that number starts tanking, as RBM said. They seem like one of the rare sets that actually actively work better at fewer colors. I'd argue that those sets are:I think you could use those lands if you want to push two color strategies and punish 3-5c, since in two color decks you don't need any non-basics usually, so those lands would probably come untapped most of the time.
Sadly you can't fetch them, so definitely loses to comparison to duals, shocks and tango lands
Meteor Blast hasn't gotten any love here, but after looking at it again, I'm surprised there hasn't been discussion about it. Quarantine Field and Silence the Believers have both been great over here just to kill a thing for 4 with the option of killing more things for more mana, which is generally a blowout. This doesn't hit quite as many targets but it can take out a planeswalker or just provide some reach and it requires less mana to get to more targets. I haven't really seen this cast yet but this has to be solid right?
That's fair. I was thinking the option to kill a walker or get reach would make it real, but yeah, Mortars is a card.