Megatron, Destructive Force is a cheap 4/5 Vehicle for 4 Mana, and when it attacks, you can Sacrifice an Artifact to deal damage to a target Creature
UB Terror -3 Breath Weapon -1 Defile -1 Heaped Harvest +2 Pilfer +1 Thorn of the Black Rose +1 Snuff Out +1 Blood Fountain Similar matchup to mono U, but they play zero early game threats, leaving all to our big removals
Its +1 lets you scry and tap an untapped artifact to then draw a card
First, this is my list, and it could differ from yours
Sharding Sphinx Back to the artifact synergies, Sharding Sphinx rewards you for hitting your opponents with artifacts by, well, creating more artifacts
The location cards also feature the first landscape art of the game, which makes for some beautiful Enchanted variants