Green Mana Battery

Artifact

, : Put a charge counter on Green Mana Battery.

, Remove any number of charge counters from Green Mana Battery: Add to your mana pool, then add an additional to your mana pool for each charge counter removed this way.

Gremlin Mine

Artifact

, , Sacrifice Gremlin Mine: Gremlin Mine deals 4 damage to target artifact creature.

, , Sacrifice Gremlin Mine: Remove up to four charge counters from target noncreature artifact.

Grid Monitor

Artifact Creature - Construct

You can't cast creature spells.

Grifter's Blade

Artifact - Equipment

Flash

As Grifter's Blade enters the battlefield, choose a creature you control it could be attached to. If you do, it enters the battlefield attached to that creature.

Equipped creature gets +1/+1.

Equip

Grim Monolith

Artifact

Grim Monolith doesn't untap during your untap step.

: Add to your mana pool.

: Untap Grim Monolith.

Part prison, part home.

Grim Poppet

Artifact Creature - Scarecrow

Grim Poppet enters the battlefield with three -1/-1 counters on it.

Remove a -1/-1 counter from Grim Poppet: Put a -1/-1 counter on another target creature.

Beware a scarecrow bearing gifts-especially sloshing vessels of acid.

Grimoire of the Dead

Legendary Artifact

, , Discard a card: Put a study counter on Grimoire of the Dead.

, Remove three study counters from Grimoire of the Dead and sacrifice it: Put all creature cards from all graveyards onto the battlefield under your control. They're black Zombies in addition to their other colors and types.

Grindclock

Artifact

: Put a charge counter on Grindclock.

: Target player puts the top X cards of his or her library into his or her graveyard, where X is the number of charge counters on Grindclock.

Pray you never hear it chime.

Grinding Station

Artifact

, Sacrifice an artifact: Target player puts the top three cards of his or her library into his or her graveyard.

Whenever an artifact enters the battlefield, you may untap Grinding Station.

Grindstone

Artifact

, : Target player puts the top two cards of his or her library into his or her graveyard. If both cards share a color, repeat this process.

"Memory is a burden that wears at the soul as weather wears at stone."
-Crovax

Grinning Totem

Artifact

, , Sacrifice Grinning Totem: Search target opponent's library for a card and exile it. Then that player shuffles his or her library. Until the beginning of your next upkeep, you may play that card. At the beginning of your next upkeep, if you haven't played it, put it into its owner's graveyard.

Gruul Cluestone

Artifact

: Add or to your mana pool.

, , Sacrifice Gruul Cluestone: Draw a card.

Forgotten under rocks and vines, Gruul symbols mark the sites of primitive rituals where shamans once chanted to the wild.

Gruul Keyrune

Artifact

: Add or to your mana pool.

: Gruul Keyrune becomes a 3/2 red and green Beast artifact creature with trample until end of turn.

As perilous and unpredictable as the wilds themselves.

Gruul Signet

Artifact

, : Add to your mana pool.

Gruul War Plow

Artifact

Creatures you control have trample.

: Gruul War Plow becomes a 4/4 Juggernaut artifact creature until end of turn.

Guardian Idol

Artifact

Guardian Idol enters the battlefield tapped.

: Add to your mana pool.

: Guardian Idol becomes a 2/2 Golem artifact creature until end of turn.

Guardian of the Ages

Artifact Creature - Golem

Defender (This creature can't attack.)

When a creature attacks you or a planeswalker you control, if Guardian of the Ages has defender, it loses defender and gains trample.

"At my feet, invasions end."-Statue inscription

Guardians of Meletis

Artifact Creature - Golem

Defender

The histories speak of two feuding rulers whose deaths were celebrated and whose monuments symbolized the end of their wars. In truth they were peaceful lovers, their story lost to the ages.

Gust-Skimmer

Artifact Creature - Insect

: Gust-Skimmer gains flying until end of turn.

Phyrexian smog clouds choked the skies, threatening creatures who couldn't comprehend the menace below.

Gustha's Scepter

Artifact

: Exile a card from your hand face down. You may look at it for as long as it remains exiled.

: Return a card you own exiled with Gustha's Scepter to your hand.

When you lose control of Gustha's Scepter, put all cards exiled with Gustha's Scepter into their owner's graveyard.

Hair-Strung Koto

Artifact

Tap an untapped creature you control: Target player puts the top card of his or her library into his or her graveyard.

"The Kami War drove many members of Konda's court insane. As their spiritual world turned against them, so too did their minds turn from reality."
-The History of Kamigawa

Hall of Triumph

Legendary Artifact

As Hall of Triumph enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+1.

Heroes act without thought of glory or reward. Accolades are a consequence, not a goal.

Hammer of Ruin

Artifact - Equipment

Equipped creature gets +2/+0.

Whenever equipped creature deals combat damage to a player, you may destroy target Equipment that player controls.

Equip

By hammer forged, and by hammer undone.

Hankyu

Artifact - Equipment

Equipped creature has ": Put an aim counter on Hankyu" and ", Remove all aim counters from Hankyu: This creature deals damage to target creature or player equal to the number of aim counters removed this way."

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Haunted Guardian

Artifact Creature - Construct

Defender, first strike

"Drain the victim's blood, sell the corpse, and use the soul on guard duty. No muss, no fuss, no problems."
-Olivia Voldaren

Haunted Plate Mail

Artifact - Equipment

Equipped creature gets +4/+4.

: Until end of turn, Haunted Plate Mail becomes a 4/4 Spirit artifact creature that's no longer an Equipment. Activate this ability only if you control no creatures.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Healer's Headdress

Artifact - Equipment

Equipped creature gets +0/+2 and has ": Prevent the next 1 damage that would be dealt to target creature or player this turn."

: Attach Healer's Headdress to target creature you control.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Heap Doll

Artifact Creature - Scarecrow

Sacrifice Heap Doll: Exile target card from a graveyard.

"I know one night it won't come back. Then I'll know it's truly done its job."
-Braenna, cobblesmith

Heart of Ramos

Artifact

: Add to your mana pool.

Sacrifice Heart of Ramos: Add to your mana pool.

Ramos bled, and there was fire.

Heart-Piercer Bow

Artifact - Equipment

Whenever equipped creature attacks, Heart-Piercer Bow deals 1 damage to target creature defending player controls.

Equip

Designed by an ancient artificer, the finest Mardu bows are carved from dragon bone and strung with the wind itself.

Heartseeker

Artifact - Equipment

Equipped creature gets +2/+1 and has ", Unattach Heartseeker: Destroy target creature."

Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)

Heartstone

Artifact

Activated abilities of creatures cost less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.

"Finding a true heartstone is even harder than finding a true heart."
-Hanna

Heartwood Shard

Artifact

, or , : Target creature gains trample until end of turn.

Heavy Arbalest

Artifact - Equipment

Equipped creature doesn't untap during its controller's untap step.

Equipped creature has ": This creature deals 2 damage to target creature or player."

Equip

Heavy Mattock

Artifact - Equipment

Equipped creature gets +1/+1.

As long as equipped creature is a Human, it gets an additional +1/+1.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Hedron Archive

Artifact

: Add to your mana pool.

, , Sacrifice Hedron Archive: Draw two cards.

"You've begun to understand the hedrons' true purpose," said Ugin. "The Eldrazi can be imprisoned.""And how did that work out last time?" asked Jace.

Hedron Blade

Artifact - Equipment

Equipped creature gets +1/+1.

Whenever equipped creature becomes blocked by one or more colorless creatures, it gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Hedron Crawler

Artifact Creature - Construct

: Add {C} to your mana pool. ({C} represents colorless mana.)

"It's endearing, in a mystical, pointy sort of way."
-General Tazri, allied commander

Hedron Matrix

Artifact - Equipment

Equipped creature gets +X/+X, where X is its converted mana cost.

Equip

The hedrons awoke along with the Eldrazi, forming superstructures that radiated overwhelming magic.

Hedron Rover

Artifact Creature - Construct

Landfall - Whenever a land enters the battlefield under your control, Hedron Rover gets +2/+2 until end of turn.

"Now that it has woken up and wandered off, we should go see what it was guarding."
-Gotzen, Bulwark explorer