Mirrodin Besieged

{R}: Target creature can't block Spin Engine this turn.

Sphere of the Suns enters the battlefield tapped and with three charge counters on it. {T}, Remove a charge counter from Sphere of the Suns: Add on...

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

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Signal Pest can't be blocked except by cr...

Shriekhorn enters the battlefield with three charge counters on it. {T}, Remove a charge counter from Shriekhorn: Target player mills two cards.

Create two 1/1 colorless Myr artifact creature tokens.

Flash You may cast artifact spells as though they had flash.

Sacrifice an artifact: Regenerate Rusted Slasher.

Metalcraft — Razorfield Rhino gets +2/+2 as long as you control three or more artifacts.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {T}: Add {C}.

When Piston Sledge enters the battlefield, attach it to target creature you control. Equipped creature gets +3/+1. Equip—Sacrifice an artifact.

As Phyrexian Revoker enters the battlefield, choose a nonland card name. Activated abilities of sources with the chosen name can't be activated.

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 ...

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

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

When Peace Strider enters the battlefield, you gain 3 life.

Imprint — {T}: Exile target artifact card from a graveyard. Myr Welder has all activated abilities of all cards exiled with it.

{T}: Create a 1/1 colorless Myr artifact creature token. {T}, Tap five untapped Myr you control: Search your library for a Myr creature card, put i...

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

Whenever another nontoken artifact enters the battlefield under your control, you may pay {2}. If you do, create a token that's a copy of that arti...

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

Flying

Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of their library. Whenever a player casts a spell from...