Mirrodin Besieged

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

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

Put target artifact, creature, or enchantment on top of its owner's library.

When Oculus dies, you may draw a card.

Shroud (This creature can't be the target of spells or abilities.) Whenever Neurok Commando deals combat damage to a player, you may draw a card.

Look at the top seven cards of your library. You may put one of those cards onto the battlefield if it has the same name as a permanent. Put the re...

Flying Whenever you cast an artifact spell, you may untap target creature.

Search your library for a card, exile it, then shuffle your library. Any opponent may have you put that card into your hand. If no player does, you...

At the beginning of your upkeep, you may have Cryptoplasm become a copy of another target creature, except it has this ability.

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

Whenever a creature deals combat damage to you, that creature's controller gains control of Contested War Zone. {T}: Add {C}. {1}, {T}: Attacking c...

Equipped creature gets +1/+0 and has first strike. Equip {1}

Training Drone can't attack or block unless it's equipped.

{3}, {T}: Put a charge counter on Titan Forge. {T}, Remove three charge counters from Titan Forge: Create a 9/9 colorless Golem artifact creature t...

Double strike, protection from black and from green

{2}{G}: Regenerate Tangle Hulk.

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

{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...

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

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

Sacrifice an artifact: Regenerate Rusted Slasher.

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