Emma's Laboratory

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life.
{t}: Add {c} to your mana pool.
{4}, {t}, Sacrifice Emma's Laboratory: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

"The legendary sage who walked these halls is said to have unlocked the secret to eternal life".