mewtwo pokemon card black star Rare Vintage Dark Promo #14 Pokemon - Mewtwo-EX (XY107) -

You have two entire blocks of Slivers to pull from ( Tempest block and Onslaught block), and you can reprint similarly worded, old-school Slivers from Time Spiral block

When you cast it for free from your opening hand, it costs 3 mana to equip at sorcery speed

Combined with some Simian Spirit Guides and rituals, if we can find a way to give the ol' Raze-Boar haste, I think we have the makings of a pretty threatening strategy

Goes without saying

For the last listthe best black Foundations cardsI said that you could feasibly put them all in the same list, and it would be powerful

There are reprints like Shock, for example, that are more relevant as a Limited common than as a Standard role-player because there are better cards that fit that role in Standard