Mirrodin Besieged

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.) When Core Prowler die...

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

Flying At the beginning of your upkeep, if you control no Thopters other than Thopter Assembly, return Thopter Assembly to its owner's hand and cre...

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

{4}, {T}: Target opponent loses 2 life, gets a poison counter, then puts the top six cards of their library into their graveyard.

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

When Pierce Strider enters the battlefield, target opponent loses 3 life.

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

{U}: Gust-Skimmer gains flying until end of turn.

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

{W}: Bladed Sentinel gains vigilance until end of turn.

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...

{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.