Goblin King

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

Black Vise

As Black Vise enters, choose an opponent.
At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

Blood Moon

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

City in a Bottle

Whenever one or more other nontoken permanents with a name originally printed in the Arabian Nights expansion are on the battlefield, their controllers sacrifice them.
Players can't cast spells or play lands with a name originally printed in the Arabian Nights expansion.

Ironclaw Orcs

Ironclaw Orcs can't block creatures with power 2 or greater.

Goblins of the Flarg

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
When you control a Dwarf, sacrifice Goblins of the Flarg.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Dragon Whelp

Flying
{R}: Dragon Whelp gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Dragon Whelp at the beginning of the next end step.

Ankh of Mishra

Whenever a land enters, Ankh of Mishra deals 2 damage to that land's controller.

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Goblin Balloon Brigade

{R}: Goblin Balloon Brigade gains flying until end of turn.

Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Goblin Digging Team

{T}, Sacrifice Goblin Digging Team: Destroy target Wall.

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Ydwen Efreet

Whenever Ydwen Efreet blocks, flip a coin. If you lose the flip, remove Ydwen Efreet from combat and it can't block this turn. Creatures it was blocking that had become blocked by only Ydwen Efreet this combat become unblocked.

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.