先駆のゴーレム

先駆のゴーレムが戦場に出たとき、無色の３/３のゴーレム・アーティファクト・クリーチャー・トークンを２体戦場に出す。
プレイヤーがゴーレム１体のみを対象としてインスタント・呪文かソーサリー・呪文を１つ唱えるたび、そのプレイヤーはその呪文を、その呪文が対象にできる他の各ゴーレム１体につき１回コピーする。それぞれのコピーは、それらのゴーレムのうち別々のものを対象とする。

先驱魔像

当先驱魔像进战场时，将两个3/3无色魔像衍生神器生物放进战场。
每当任一牌手施放仅以单一魔像为目标的瞬间或法术咒语时，该咒语每能以一个其他的魔像为目标，该牌手便将该咒语复制一次。每个复制品都要以这些魔像之一为目标，且不能重复选择。

Precursor Golem

When Precursor Golem enters, create two 3/3 colorless Golem artifact creature tokens.
Whenever a player casts an instant or sorcery spell that targets only a single Golem, that player copies that spell for each other Golem that spell could target. Each copy targets a different one of those Golems.

The Brothers' War Retro Artifacts

When Precursor Golem enters the battlefield, create two 3/3 colorless Golem artifact creature tokens.
Whenever a player casts an instant or sorcery spell that targets only a single Golem, that player copies that spell for each other Golem that spell could target. Each copy targets a different one of those Golems.

The List

Modern Masters 2015

When Precursor Golem enters the battlefield, put two 3/3 colorless Golem artifact creature tokens onto the battlefield.
Whenever a player casts an instant or sorcery spell that targets only a single Golem, that player copies that spell for each other Golem that spell could target. Each copy targets a different one of those Golems.

Any Golem that couldn't be targeted by the original spell (due to shroud, protection abilities, targeting restrictions, or any other reason) is just ignored by Precursor Golem's second ability.

If an instant or sorcery spell has multiple targets, but it's targeting the same Golem with all of them (such as Agony Warp targeting the same Golem twice), Precursor Golem's last ability will trigger.

If the spell that's copied has an X whose value was determined as it was cast (like Fireball does), the copies have the same value of X.

If the spell that's copied is modal (that is, it says "Choose one —" or the like), the copies will have the same mode. Their controller can't choose a different one.

The controller of a copy can't choose to pay any additional costs for the copy. However, effects based on any additional costs that were paid for the original spell are copied as though those same costs were paid for the copy too.

The controller of the spell that caused Precursor Golem's second ability to trigger also controls all the copies. That player chooses the order the copies are put onto the stack. The original spell will be on the stack beneath those copies and will resolve last.

The copies that Precursor Golem's second ability creates are created on the stack, so they're not "cast." Abilities that trigger when a player casts a spell (like Precursor Golem's second ability itself) won't trigger.

The second ability triggers whenever a player casts an instant or sorcery spell that targets only one Golem and no other object or player. That Golem can be Precursor Golem itself, one of the Golem tokens it created, or any other Golem. It doesn't matter who controls the Golem.