Gibbering Hyenas can't block black creatures.

Whenever Goblin Elite Infantry blocks or becomes blocked, it gets -1/-1 until end of turn.

Create three 1/1 red Goblin Scout creature tokens with mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

, , Sacrifice a Goblin: Red creatures get +1/+1 until end of turn.

, : Destroy target artifact. That artifact deals damage equal to its converted mana cost to Goblin Tinkerer.

, : Granger Guildmage deals 1 damage to any target and 1 damage to you.
, : Target creature gains first strike until end of turn.

Grasslands enters the battlefield tapped.
, Sacrifice Grasslands: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle your library.

You may cast Grave Servitude as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant creature
Enchanted creature gets +3/-1 and is black.

If Gravebane Zombie would die, put Gravebane Zombie on top of its owner's library instead.

At the beginning of your upkeep, Grim Feast deals 1 damage to you.
Whenever a creature is put into an opponent's graveyard from the battlefield, you gain life equal to its toughness.

, , Sacrifice Grinning Totem: Search target opponent's library for a card and exile it. Then that player shuffles their 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.

Flying
: Return target Aura card from your graveyard to the battlefield attached to Hakim, Loreweaver. Activate this ability only during your upkeep and only if Hakim isn't enchanted.
, : Destroy all Auras attached to Hakim.

At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.

Hammer of Bogardan deals 3 damage to any target.
: Return Hammer of Bogardan from your graveyard to your hand. Activate this ability only during your upkeep.

At the beginning of your upkeep, put a -1/-1 counter on each creature.

Reach (This creature can block creatures with flying.)
Whenever Harbor Guardian attacks, defending player may draw a card.

Flying
: Target creature gains flying until end of turn.

Flying
As Haunting Apparition enters the battlefield, choose an opponent.
Haunting Apparition's power is equal to 1 plus the number of green creature cards in the chosen player's graveyard.

Flying, protection from red

Choose one —
• Target player gains 3 life.
• Prevent the next 3 damage that would be dealt to any target this turn.