Darksteel

Whenever an opponent discards a card, you may draw a card.

{U}: Target creature becomes an artifact in addition to its other types until end of turn. {U}: Until end of turn, target artifact creature becomes...

Equipped creature has first strike and "{T}, Unattach Surestrike Trident: This creature deals damage equal to its power to target player or planesw...

Whenever a player casts a black spell, you may gain 1 life.

First strike Modular 4 (This creature enters the battlefield with four +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target...

Each creature you control can't be blocked as long as defending player controls an artifact land.

Flying Whenever Emissary of Despair deals combat damage to a player, that player loses 1 life for each artifact they control.

Imprint — {1}: Exile target creature card from your graveyard. As long as a card exiled with Death-Mask Duplicant has flying, Death-Mask Duplicant ...

First strike Modular 4 (This creature enters the battlefield with four +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target...

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) At the beginning of your upkeep, you may move a +1/+1 co...

Whenever a player casts a white spell, you may gain 1 life.

Each creature you control can't be blocked as long as defending player controls an artifact land.

Put two +1/+1 counters on target creature and two +1/+1 counters on another target creature.

Karstoderm enters the battlefield with five +1/+1 counters on it. Whenever an artifact enters the battlefield, remove a +1/+1 counter from Karstoderm.

Defender (This creature can't attack.) Protection from artifacts Whenever an opponent casts an artifact spell, you may create a 1/1 green Insect cr...

When Vulshok War Boar enters the battlefield, sacrifice it unless you sacrifice an artifact.

Cast this spell only during the declare attackers step. Attacking creatures you control get +X/+0 until end of turn, where X is the number of attac...

{R}, {T}: Flip a coin. If you win the flip, destroy target artifact and untap Goblin Archaeologist. If you lose the flip, sacrifice Goblin Archaeol...

This spell costs {1} more to cast for each target beyond the first. Fireball deals X damage divided evenly, rounded down, among any number of targets.

Destroy target artifact. If that artifact had counters on it, put that many +1/+1 counters or charge counters on an artifact you control.

Target opponent chooses an artifact card in their graveyard. Put that card onto the battlefield under your control.

Enchant creature Enchanted creature gets -1/-1. When enchanted creature dies, return Screams from Within from your graveyard to the battlefield.

{T}: Target creature gets +1/+1 until end of turn. Whenever you cast a spell, you may untap Leonin Battlemage.

At the beginning of your end step, if Nim Abomination is untapped, you lose 3 life.