MTG

{2}, {T}: Target player puts the top two cards of their library into their graveyard.

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

{T}, Sacrifice an artifact: Put a +1/+1 counter on target creature. Activate this ability only during your upkeep.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

Gaea's Avenger's power and toughness are each equal to 1 plus the number of artifacts your opponents control.

You may choose not to untap Phyrexian Gremlins during your untap step. {T}: Tap target artifact. It doesn't untap during its controller's untap ste...

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. {1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Work...

Vigilance

As Shapeshifter enters the battlefield, choose a number between 0 and 7. At the beginning of your upkeep, you may choose a number between 0 and 7. ...

{2}: Prevent the next 1 damage that would be dealt to any target this turn. Return Rakalite to its owner's hand at the beginning of the next end step.

Whenever an artifact becomes tapped or a player activates an artifact's ability without {T} in its activation cost, Haunting Wind deals 1 damage to...

Put any number of target artifact cards from target player's graveyard on top of their library in any order.

Return all artifacts target player owns to their hand.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}, Sacrifice an artifact: Add an amount of {B} equal to the sacrificed artifact's converted mana cost.

{T}, Sacrifice an artifact: Draw a card.

{T}: Add {C}. {T}, Sacrifice Strip Mine: Destroy target land.

Flying Clockwork Avian enters the battlefield with four +1/+0 counters on it. At end of combat, if Clockwork Avian attacked or blocked this combat,...

As Primal Clay enters the battlefield, it becomes your choice of a 3/3 artifact creature, a 2/2 artifact creature with flying, or a 1/6 Wall artifa...

Attacking creatures get +1/+0.