Goblin King

Other Goblins get +1/+1 and have mountainwalk.

Goblin Lore

Draw four cards, then discard three cards at random.

Goblin Piker

Holy Day

Prevent all combat damage that would be dealt this turn.

Goblin Sky Raider

Flying (This creature can't be blocked except by creatures with flying or reach.)

Guerrilla Tactics

Guerrilla Tactics deals 2 damage to any target.
When a spell or ability an opponent controls causes you to discard this card, it deals 4 damage to any target.

Hill Giant

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Kamahl, Pit Fighter

Haste (This creature can attack and {T} as soon as it comes under your control.)
{T}: Kamahl deals 3 damage to any target.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Lavaborn Muse

At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, this creature deals 3 damage to that player.

Lightning Elemental

Haste (This creature can attack and {T} as soon as it comes under your control.)

Manabarbs

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

Tenth Edition