Slocum's Diner

At the beginning of your upkeep, if you control
four or more artifacts, you gain 2 life.

{t} Add {c} to your mana pool.

{4}, {t} Sacrifice Slocum's Diner: Search your
library for an artifact card, reveal it, put it into your
hand, then shuffle your library. Activate this ability
only if you control three or more artifacts.