Dross Scorpion

Whenever this creature or another artifact creature dies, you may untap target artifact.

Deserted Temple

{T}: Add {C}.
{1}, {T}: Untap target land.

Damping Field

Players can't untap more than one artifact during their untap steps.

Hokori, Dust Drinker

Lands don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player untaps a land they control.

Coveted Jewel

When this artifact enters, draw three cards.
{T}: Add three mana of any one color.
Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of this artifact. Untap it.

Clock of Omens

Tap two untapped artifacts you control: Untap target artifact.

Blinkmoth Urn

At the beginning of each player's first main phase, if this artifact is untapped, that player adds {C} for each artifact they control.

Angel's Trumpet

All creatures have vigilance.
At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.