mtg tear up card Mana Breach — Seventh Edition (7ED) | exile them Blacker Lotus · Unglued (UGL)

Leyline of the Guildpact might not be the most powerful, but it gets the MVP award on this list because it fixes your mana in one card

Not only that, but it has the potential to give TWO creatures haste because you can split the mana

Circle of Protection: Art Circle of Protection: Artifacts Circle of Protection: Black Circle of Protection: Blue Circle of Protection: Green Circle of Protection: Red Circle of Protection: Shadow Circle of Protection: White

Thats already incredibly useful, but all lands you draw this way can also be placed directly on the field

I love cards still out there like Preferred Selection, Rainbow Vale, or Bubble Matrix as well