It swings games as soon as it hits, synergizes well with already-powerful cards, and slots into a variety of existing decks
Jim Hawkins, Space Traveler looks to full capitalise on the new mechanic with a great way to cheat out your more expensive locations via his This Is It
As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, you draw two cards and you lose 2 life
Honorable Mentions: Many, Many Mana Rocks Commander decks are chock-full of mana rocks it's not too far of a stretch to say that its deck-building rules are all decks must include one commander, one Sol Ring, one Arcane Signet, and 97 other cards. For that reason, with just a couple of exceptions, I'll leave mana rocks out of this ranking
Just stick with me) This card is actually almost too narrow to make this list
Mega Venusaur ex takes 20 additional damage from Fire-type attacks