Finding themselves in a new and unexplored world, they immediately set it on fire.

新しい見知らぬ地に来たことに気づいた彼らは、すぐさまそこに火をつけた。

ゴブリンの壊し走り

{1}{R}, 土地１つを生け贄に捧げる：ゴブリンの壊し走りの上に＋１/＋１カウンターを１個置く。
あなたの終了ステップの開始時に、プレイヤー１人を対象とする。あなたは「ゴブリンの壊し走りはそのプレイヤーに、これの上に置かれている＋１/＋１カウンターの数に等しい点数のダメージを与える。」を選んでもよい。

Goblin Razerunners

{1}{R}, Sacrifice a land: Put a +1/+1 counter on this creature.
At the beginning of your end step, you may have this creature deal damage equal to the number of +1/+1 counters on it to target player or planeswalker.

Finding an unexplored world, they immediately set it on fire.

Neon Dynasty Commander

{1}{R}, Sacrifice a land: Put a +1/+1 counter on Goblin Razerunners.
At the beginning of your end step, you may have Goblin Razerunners deal damage equal to the number of +1/+1 counters on it to target player or planeswalker.

Battlebond

Duel Decks: Merfolk vs. Goblins

{1}{R}, Sacrifice a land: Put a +1/+1 counter on Goblin Razerunners.
At the beginning of your end step, you may have Goblin Razerunners deal damage equal to the number of +1/+1 counters on it to target player.

Conflux

{1}{R}, Sacrifice a land: Put a +1/+1 counter on Goblin Razerunners.
At the end of your turn, you may have Goblin Razerunners deal damage equal to the number of +1/+1 counters on it to target player.

If Goblin Razerunners leaves the battlefield after its ability triggers but before it resolves, the amount of damage it deals is equal to the number of +1/+1 counters that were on it as it last existed on the battlefield.

You don't count how many +1/+1 counters are on Goblin Razerunners until its triggered ability resolves.