Scars of Mirrodin

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

Artifact creatures you control get +2/+2.

T, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying Whenever this creature deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

8, T: This artifact deals 12 damage to target creature.

This artifact enters with three charge counters on it. BB, T: Put a charge counter on this artifact. 2, T, Remove a charge counter from this artifact: Put a -1/-1 counter on target creature.

This artifact enters with three charge counters on it. GG, T: Put a charge counter on this artifact. 2, T, Remove a charge counter from this artifact: Create a 1/1 green Phyrexian Insect creature token with infect.

This artifact enters with three charge counters on it. WW, T: Put a charge counter on this artifact. 2, T, Remove a charge counter from this artifact: Target player gains 3 life.

This artifact enters with three charge counters on it. RR, T: Put a charge counter on this artifact. 2, T, Remove a charge counter from this artifact: Target creature gets +3/+0 until end of turn.

This artifact enters with three charge counters on it. UU, T: Put a charge counter on this artifact. 2, T, Remove a charge counter from this artifact: Draw a card.

When this creature enters, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.

Creatures you control have double strike and lifelink.

This artifact enters with three charge counters on it. T, Remove a charge counter from this artifact: Tap target artifact or creature.

Whenever a land enters under an opponent's control, if that player had another land enter the battlefield under their control this turn, this creature deals 3 damage to that player.

Counter target spell that targets a permanent you control.

Turn to Slag deals 5 damage to target creature. Destroy all Equipment attached to that creature.

Switch target creature's power and toughness until end of turn. Draw a card.

Target creature gets +X/+X until end of turn.

Target creature gains flying until end of turn. Untap it.

B: This creature gains infect until end of turn. (It 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 only if you control three or more artifacts.

You have no maximum hand size. At the beginning of your upkeep, you gain 1 life for each card in your hand.

+2: Exile target permanent you own. Return it to the battlefield under your control at the beginning of the next end step. −1: Creatures can't be blocked this turn. −8: You get an emblem with "Whenever you cast a spell, exile target permanent."

Whenever a creature you control dies, you may pay X. If you do, you gain X life.