Training Lab

Training Lab enters the battlefield Tapped.
When Training Lab enters the battlefield, if you control an artifact with converted mana cost 2 or more, you get {e} (an energy counter).
{t}: Add {u} or {r} to your mana pool.
Many who gaze upon the Training Lab for the first time think it would belong to a mad inventor. In reality, it is home to those who are just starting to perfect their inventions.