Mirrodin Besieged

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

Flying

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 cre...

Flying, haste {1}{R}: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.

Flying

{T}: Attach target Equipment you control to target creature you control.

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

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

First strike, deathtouch Whenever a creature an opponent controls dies, you may return target artifact card from your graveyard to your hand.

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}.

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

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...

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

Trample, infect, indestructible If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it int...

This spell can't be countered. Hexproof (This creature can't be the target of spells or abilities your opponents control.) {1}{G}: Regenerate Thr...

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

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...

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 ...

{2}{U}, {T}: Put a -1/-1 counter on target creature. You may tap or untap that creature.

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

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 cr...

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

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