Whenever you cast an artifact spell, you may put a charge counter on Golem Foundry. Remove three charge counters from Golem Foundry: Create a 3/3 colorless Golem artifact creature token.
{2}, {T}: Target player exiles a card from their graveyard. If it's a creature card, you gain 2 life.
Thanks to Havengul's thriving illegal market for corpses, the shovel that interred a body during the day is usually the same one digging it out at night.
{2}, {T}: Put a charge counter on Green Mana Battery. {T}, Remove any number of charge counters from Green Mana Battery: Add {G}, then add an additional {G} for each charge counter removed this way.
{1}, {T}, Sacrifice Gremlin Mine: It deals 4 damage to target artifact creature. {1}, {T}, Sacrifice Gremlin Mine: Remove up to four charge counters from target noncreature artifact.