Magnetic Mine

Whenever another artifact is put into a graveyard from the battlefield, Magnetic Mine deals 2 damage to that artifact's controller.

Liquimetal Coating

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

{T}: Target land becomes an artifact in addition to its other types until end of turn.

Whenever an artifact is put into an opponent's graveyard from the battlefield, you may draw a card.

{T}: Add one mana of any color.
{1}, {T}: Untap target legendary creature you control.

First strike
{T}: Destroy target artifact if its mana value is equal to the amount of unspent mana you have.

{T}: Add {C}.
{T}: Target nonland permanent becomes an artifact in addition to its other types until end of turn.