Frogmite

Artifact Creature — Frog (2/2)

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Galvanic Juggernaut

Artifact Creature — Juggernaut (5/5)

Galvanic Juggernaut attacks each combat if able.
Galvanic Juggernaut doesn't untap during your untap step.
Whenever another creature dies, untap Galvanic Juggernaut.

Gate to the Aether

Artifact

At the beginning of each player's upkeep, that player reveals the top card of their library. If it's an artifact, creature, enchantment, or land card, the player may put it onto the battlefield.

Gatekeeper Gargoyle

Artifact Creature — Gargoyle (3/3)

Flying
Gatekeeper Gargoyle enters the battlefield with a +1/+1 counter on it for each Gate you control.

Gauntlet of Might

Artifact

Red creatures get +1/+1.
Whenever a Mountain is tapped for mana, its controller adds an additional .

Gauntlet of Power

Artifact

As Gauntlet of Power enters the battlefield, choose a color.
Creatures of the chosen color get +1/+1.
Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color.

Gauntlets of Chaos

Artifact

, Sacrifice Gauntlets of Chaos: Exchange control of target artifact, creature, or land you control and target permanent an opponent controls that shares one of those types with it. If those permanents are exchanged this way, destroy all Auras attached to them.

Gearsmith Guardian

Artifact Creature — Construct (3/5)

Gearsmith Guardian gets +2/+0 as long as you control a blue creature.

Geist-Fueled Scarecrow

Artifact Creature — Scarecrow (4/4)

Creature spells you cast cost more to cast.

Geistcatcher's Rig

Artifact Creature — Construct (4/5)

When Geistcatcher's Rig enters the battlefield, you may have it deal 4 damage to target creature with flying.

Gemini Engine

Artifact Creature — Construct (3/4)

Whenever Gemini Engine attacks, create a colorless Construct artifact creature token named Twin that's attacking. Its power is equal to Gemini Engine's power and its toughness is equal to Gemini Engine's toughness. Sacrifice the token at end of combat.

Gemstone Array

Artifact

: Put a charge counter on Gemstone Array.
Remove a charge counter from Gemstone Array: Add one mana of any color.

General's Kabuto

Artifact — Equipment

Equipped creature has shroud. (It can't be the target of spells or abilities.)
Prevent all combat damage that would be dealt to equipped creature.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Geode Golem

Artifact Creature — Golem (5/3)

Trample
Whenever Geode Golem deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost. (You still pay any additional costs.)

Geth's Grimoire

Artifact

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

Ghirapur Orrery

Artifact

Each player may play an additional land on each of their turns.
At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

Ghost Ark

Artifact — Vehicle

Flying
Repair Barge — Whenever Ghost Ark becomes crewed, each artifact creature card in your graveyard gains unearth until end of turn.
Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

Giant Fan

Artifact

, : Move a counter from one permanent onto another. If the second permanent refers to any kind of counter, the moved counter becomes one of those counters. Otherwise, it becomes a +1/+1 counter.

Gilded Lotus

Artifact

: Add three mana of any one color.

Gilded Sentinel

Artifact Creature — Golem (3/3)