When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Draw three cards. Then target opponent faces a villainous choice — They discard three cards, or you may cast a spell from your hand without paying its mana cost.

Reverberating Summons — At the beginning of your end step, each opponent loses 2 life. Then for each opponent who has less life than you, create a 1/3 black Demon creature token named Plaguebearer of Nurgle.

Greater Sandwurm can't be blocked by creatures with power 2 or less.

Cycling (, Discard this card: Draw a card.)

, : Put a charge counter on Green Mana Battery.

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

Grief Tyrant enters the battlefield with four -1/-1 counters on it.

When Grief Tyrant dies, put a -1/-1 counter on target creature for each -1/-1 counter on Grief Tyrant.

0: Monstrosity 10. This ability costs less to activate for each creature with power 4 or greater your opponents control. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)

When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Giganotosaurus.

, , Exile two cards from your graveyard: Grim Lavamancer deals 2 damage to any target.

Flash

Tragic Backstory — Cast this spell only if a creature died this turn.

Grimdancer enters the battlefield with your choice of two different counters on it from among menace, deathtouch, and lifelink.

: Creatures your opponents control attack this turn if able.

: Add .

, , Sacrifice Grixis Panorama: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

: Add .

, , Tap two untapped creatures you control, Sacrifice Grove of the Guardian: Create an 8/8 green and white Elemental creature token with vigilance.

: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)

Whenever one or more +1/+1 counters are put on Growth-Chamber Guardian, you may search your library for a card named Growth-Chamber Guardian, reveal it, put it into your hand, then shuffle.

Flying

When Gryff Vanguard enters the battlefield, draw a card.

Destroy all tapped creatures.

Prevent the next X damage that would be dealt to any target this turn. Until end of turn, you may pay any time you could cast an instant. If you do, prevent the next 1 damage that would be dealt to that permanent or player this turn.

Flash

Commander creatures you control get +2/+2.

Commanders you control have hexproof.

As long as Guardian Beast is untapped, noncreature artifacts you control can't be enchanted, they have indestructible, and other players can't gain control of them. This effect doesn't remove Auras already attached to those artifacts.

Guardian Idol enters the battlefield tapped.

: Add .

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

Vigilance (Attacking doesn't cause this creature to tap.)

When Guardian of Cloverdell enters the battlefield, create three 1/1 white Kithkin Soldier creature tokens.

, Sacrifice a Kithkin: You gain 1 life.

Flying

When Guardian of Ghirapur enters the battlefield, exile up to one other target creature or artifact you control. Return it to the battlefield under its owner's control at the beginning of the next end step.

When Guardian of Pilgrims enters the battlefield, target creature gets +1/+1 until end of turn.

Flying

Landfall — Whenever a land enters the battlefield under your control, tap target creature an opponent controls. If that land is an Island, that creature doesn't untap during its controller's next untap step.

Flying

Guardian of the Gateless can block any number of creatures.

Whenever Guardian of the Gateless blocks, it gets +1/+1 until end of turn for each creature it's blocking.

As an additional cost to cast this spell, tap four untapped artifacts, creatures, and/or lands you control.

Flying

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Vigilance

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.)

Flying

Whenever this creature attacks, return target nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is this creature's power.

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

When Guardian Shield-Bearer is turned face up, put a +1/+1 counter on another target creature you control.

Flash

Enchant creature

Creatures you control that are enchanted get +1/+1.

When Guardians of Koilos enters the battlefield, you may return another target historic permanent you control to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)

Defender

Modified creatures you control can attack as though they didn't have defender. (Equipment, Auras you control, and counters are modifications.)

Commander creatures you own have "Whenever this creature attacks a player, if no opponent has more life than that player, you create two Treasure tokens." (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

Flying

Whenever you draw your second card each turn, put a +1/+1 counter on Gurgling Anointer.

When Gurgling Anointer dies, return another target creature card with mana value less than or equal to Gurgling Anointer's power from your graveyard to the battlefield.

Flying

Sacrifice Gustrider Exuberant: Creatures you control with power 5 or greater gain flying until end of turn.

Whenever Haazda Vigilante enters the battlefield or attacks, put a +1/+1 counter on target creature you control with power 2 or less.

You may discard a card. If you do, draw a card. (Then exile this card. You may cast the creature later from exile.)

Reach

Whenever another creature enters the battlefield under your control, you may pay . When you do, that creature deals damage equal to its power to target creature.

Partner (You can have two commanders if both have partner.)

Haldir, Lórien Lieutenant enters the battlefield with X +1/+1 counters on it.

Vigilance

: Until end of turn, other Elves you control gain vigilance and get +1/+1 for each +1/+1 counter on Haldir.

If you control two or more other lands, Hall of Storm Giants enters the battlefield tapped.

: Add .

: Until end of turn, Hall of Storm Giants becomes a 7/7 blue Giant creature with ward . It's still a land. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Hamlet Vanguard enters the battlefield with two +1/+1 counters on it for each other nontoken Human you control.

: Hammerfist Giant deals 4 damage to each creature without flying and each player.

This spell costs less to cast for each creature you control with a +1/+1 counter on it.

Creature spells you cast cost less to cast for each creature you control with a +1/+1 counter on it.

Hanabi Blast deals 2 damage to any target. Return Hanabi Blast to its owner's hand, then discard a card at random.

Protection from white

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

You may sacrifice four Eldrazi Spawn rather than pay this spell's mana cost.

Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)

Protection from black

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

At the beginning of combat on your turn, equipped creature or a creature you control named Vecna gets +X/+X until end of turn, where X is the number of cards in your hand.

Equip—Pay 1 life for each card in your hand.

Equip