Raging Goblin

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

Kyren Legate

If an opponent controls a Plains and you control a Mountain, you may cast this spell without paying its mana cost.
Haste

Lava Runner

Haste
Whenever Lava Runner becomes the target of a spell or ability, that spell or ability’s controller sacrifices a land.

Avalanche Riders

Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Avalanche Riders enters the battlefield, destroy target land.

Lu Bu, Master-at-Arms

Haste; horsemanship (This creature can’t be blocked except by creatures with horsemanship.)

Lu Bu, Master-at-Arms

Haste; horsemanship (This creature can’t be blocked except by creatures with horsemanship.)

Goblin Chariot

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

Raging Goblin

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

Keldon Champion

Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Keldon Champion enters the battlefield, it deals 3 damage to target player or planeswalker.

Lu Bu, Master-at-Arms

Haste; horsemanship (This creature can’t be blocked except by creatures with horsemanship.)

Raging Goblin

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

Viashino Sandscout

Haste (This creature can attack and as soon as it comes under your control.)
At the beginning of the end step, return Viashino Sandscout to its owner’s hand. (Return it only if it’s on the battlefield.)

Avalanche Riders

Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Avalanche Riders enters the battlefield, destroy target land.

Raging Goblin

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