Scars of Mirrodin

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature. {4}, {T}: Proliferate. (Choose any number of permanents and/or...

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

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

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 you cast an artifact spell, you may have target creature get +2/+0 and gain deathtouch until end of turn.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Whenever Ogre Geargrabber attacks, gain control of target Equipment an opponent controls until end of turn. Attach it to Ogre Geargrabber. When you...

As long as Necrotic Ooze is on the battlefield, it has all activated abilities of all creature cards in all graveyards.

Each player shuffles the cards from their hand into their library, then draws that many cards. Metalcraft — If you control three or more artifacts,...

Destroy target land. Melt Terrain deals 2 damage to that land's controller.

As an additional cost to cast this spell, sacrifice an artifact. Create three 1/1 red Goblin creature tokens.

Flying, haste Metalcraft — {4}: Return Kuldotha Phoenix from your graveyard to the battlefield. Activate only during your upkeep and only if you co...

[+1]: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land. [-2]: Add {R} for each Mountain you con...

Flying {3}{R}: Destroy target artifact. Hoard-Smelter Dragon gets +X/+0 until end of turn, where X is that artifact's mana value.

Trample Goblin Gaveleer gets +2/+0 for each Equipment attached to it.

Galvanic Blast deals 2 damage to any target. Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.

Whenever you sacrifice another permanent, you may pay {2}. If you do, Furnace Celebration deals 2 damage to any target.

Vigilance When Glimmerpoint Stag enters the battlefield, exile another target permanent. Return that card to the battlefield under its owner's con...

Haste Flameborn Hellion attacks each combat if able.

{R}, Sacrifice an artifact: Ferrovore gets +3/+0 until end of turn.

Whenever you cast an artifact spell, you may pay {1}. If you do, Embersmith deals 1 damage to any target.

Target opponent reveals the top card of their library. Cerebral Eruption deals damage equal to the revealed card's mana value to that player and ea...

{T}: Bloodshot Trainee deals 4 damage to target creature. Activate only if Bloodshot Trainee's power is 4 or greater.

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