Scars of Mirrodin

Metalcraft — When Blade-Tribe Berserkers enters the battlefield, if you control three or more artifacts, Blade-Tribe Berserkers gets +3/+3 and gain...

Target creature gets +1/+0 and gains infect until end of turn. (It deals damage to creatures in the form of -1/-1 counters and to players in the fo...

Metalcraft — Ghalma's Warden gets +2/+2 as long as you control three or more artifacts.

Enchant artifact Whenever enchanted artifact becomes tapped, its controller gets a poison counter.

Target player discards a card. If a land card is discarded this way, return Psychic Miasma to its owner's hand.

Choose two target creatures. Tap those creatures, then unattach all Equipment from them.

Put a -1/-1 counter on target creature. Draw a card.

Target creature gets -4/-4 until end of turn.

Sacrifice Fume Spitter: Put a -1/-1 counter on target creature.

Sacrifice a creature: Dross Hopper gains flying 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.)

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

Metalcraft — {T}: Tap target artifact, creature, or land. Activate this ability only if you control three or more artifacts.

Counter target spell that targets a permanent you control.

Flying When Sky-Eel School enters the battlefield, draw a card, then discard a card.

Flying Metalcraft — Whenever Screeching Silcaw deals combat damage to a player, if you control three or more artifacts, that player puts the top fo...

Scrapdiver Serpent can't be blocked as long as defending player controls an artifact.

Metalcraft — As long as you control three or more artifacts, Auriok Sunchaser gets +2/+2 and has flying.

Neurok Invisimancer can't be blocked. When Neurok Invisimancer enters the battlefield, target creature can't be blocked this turn.

Flying Metalcraft — When Lumengrid Drake enters the battlefield, if you control three or more artifacts, return target creature to its owner's hand.

Return target nonland permanent to its owner's hand.

Flash (You may cast this spell any time you could cast an instant.) Enchant creature Enchanted creature doesn't untap during its controller's untap...