The Dwarven Leylines

If The Dwarven Leylines is in your opening
hand, you may begin the game with it on the
battlefield.
Artifacts cost {1} less to cast. Artifacts you control cost {1} less to equip.
"The Seven Stones channel the Dwarven Leylines above ground. It is said that Dwarf-Lords of old used them to forge the finest weapons in all the land."
- Tifar, Dwarven Battlemaster