Crown of Convergence

Play with the top card of your library revealed.
As long as the top card of your library is a creature card, creatures you control that share a color with that card get +1/+1.
{G}{W}: Put the top card of your library on the bottom of your library.

Cyclopean Snare

{3}, {T}: Tap target creature, then return this artifact to its owner's hand.

Nightguard Patrol

Dimir Signet

Glass Golem

Golgari Signet

Grifter's Blade

Flash
As this Equipment enters, choose a creature you control it could be attached to. If you do, it enters attached to that creature.
Equipped creature gets +1/+1.
Equip {1}

Junktroller

Defender
{T}: Put target card from a graveyard on the bottom of its owner's library.

Leashling

Put a card from your hand on top of your library: Return this creature to its owner's hand.

Nullstone Gargoyle

Flying
Whenever the first noncreature spell of a turn is cast, counter that spell.

Pariah's Shield

All damage that would be dealt to you is dealt to equipped creature instead.
Equip {3}

Peregrine Mask

Equipped creature has defender, flying, and first strike.
Equip {2}

Plague Boiler

At the beginning of your upkeep, put a plague counter on this artifact.
{1}{B}{G}: Put a plague counter on this artifact or remove a plague counter from it.
When this artifact has three or more plague counters on it, sacrifice it. If you do, destroy all nonland permanents.

Ravnica: City of Guilds