Mirrodin Besieged

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

Creatures your opponents control get -2/-0 until end of turn.

When Treasure Mage enters the battlefield, you may search your library for an artifact card with mana value 6 or greater, reveal it, put it into yo...

Choose one — • Counter target artifact spell. • Return target artifact to its owner's hand.

Defender Metalcraft — As long as you control three or more artifacts, Spire Serpent gets +2/+2 and can attack as though it didn't have defender.

When Oculus dies, you may draw a card.

Shroud (This creature can't be the target of spells or abilities.) Whenever Neurok Commando deals combat damage to a player, you may draw a card.

Look at the top seven cards of your library. You may put one of those cards onto the battlefield if it has the same name as a permanent. Put the re...

Flying Whenever you cast an artifact spell, you may untap target creature.

Search your library for a card, exile it, then shuffle. Any opponent may have you put that card into your hand. If no player does, you draw three c...

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

At the beginning of your upkeep, you may have Cryptoplasm become a copy of another target creature, except it has this ability.

Enchant creature You control enchanted creature. Enchanted creature has infect. (It deals damage to creatures in the form of -1/-1 counters and to ...

Flying Whenever an opponent draws a card, you may draw two cards.

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

[+1]: Look at the top five cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bo...