While she had accepted my new-found obsession with its yellow mouse, she believed the cards were a waste of money since there was no guarantee which ones I'd get, and completing my collection involved buying an awful lot of packs
This means your opponent will take some damage every time they try to smack into it
Should that happen, you can expect the value of this card to drop significantly
They are a 10 cost with 11000 power, has Rush and a once per turn punishment that knocks out an 8000 power or less Character when the opponent activates a Blocker
Pro-Black is strong
Of course, I would never advise cutting Sol Ring / Mana Crypt if you have them since they're just too good even when not used optimally, but other choices that I normally would auto-include in my Izzet decks, like Worn Powerstone and Thran Dynamo, should probably be replaced by stuff that taps for colored mana