Mirrodin assiégé

Defender Metalcraft — As long as you control three or more artifacts, Spire Serpent gets +2/+2 and can attack as though it didn't have defender.

Trample

{2}{B}: Dross Ripper gets +1/+1 until end of turn.

Metalcraft — Ardent Recruit gets +2/+2 as long as you control three or more artifacts.

Destroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already the...

At the beginning of your upkeep, you may look at the top card of your library. You may cast it without paying its mana cost if it's an instant or s...

When Myr Sire dies, create a 1/1 colorless Myr artifact creature token.

When Spine of Ish Sah enters the battlefield, destroy target permanent. When Spine of Ish Sah is put into a graveyard from the battlefield, return ...

Return up to two target nonland permanents to their owners' hands.

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

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.) Equipped creature gets ...

When Viridian Emissary dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Create two 1/1 colorless Myr artifact creature tokens.

Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) Phyrexian Juggernaut ...

Equipped creature gets +1/+1 and is an artifact in addition to its other types. Equip {2}

Flying When Serum Raker dies, each player discards a card.

Flying When Serum Raker dies, each player discards a card.

Put any number of target artifact cards from your graveyard on top of your library. Draw a card.

Destroy target artifact. You gain life equal to its converted mana cost.

Attacking creatures get +1/+0 and gain first strike until end of turn.

Gain control of target artifact until end of turn. Untap that artifact. It gains haste until end of turn.

Whenever a source deals damage to Nested Ghoul, create a 2/2 black Phyrexian Zombie creature token.