Boxing Day

Other Goblin creatures get +1/+1 and have mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

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

Goblin Brigand attacks each combat if able.

Enchant creature Enchanted creature gets +1/+2.

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

{R}: Flowstone Shambler gets +1/-1 until end of turn.

Flame Wave deals 4 damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

Enchant creature {R}: Enchanted creature gets +1/+0 until end of turn.

Target creature gets +X/+0 until end of turn.

Prevent all combat damage that would be dealt this turn.

Destroy all Islands.

Nonbasic lands are Mountains.

When Anarchist enters the battlefield, you may return target sorcery card from your graveyard to your hand.

Enchant creature Enchanted creature gets +2/+1.

Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.

Swarm of Rats's power is equal to the number of Rats you control.

Spineless Thug can't block.

Target player loses 4 life and you gain 4 life.

Destroy target green creature. It can't be regenerated. Draw a card.

When Serpent Warrior enters the battlefield, you lose 3 life.

{T}: Destroy target tapped creature.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)