Æther can turn a footprint into a blueprint.

追われる足跡

エンチャント（クリーチャー）
あなたのアップキープの開始時に、エンチャントされているクリーチャーのコピーであるトークンを１体戦場に出す。

接踵而至

结附于生物
在你的维持开始时，将一个衍生物放进战场，此衍生物为所结附的生物之复制品。

Followed Footsteps

Enchant creature
At the beginning of your upkeep, create a token that's a copy of enchanted creature.

Conspiracy: Take the Crown

Enchant creature
At the beginning of your upkeep, put a token that's a copy of enchanted creature onto the battlefield.

Ravnica: City of Guilds

Enchant creature
At the beginning of your upkeep, put a creature token into play that's a copy of enchanted creature.

Any "enters" abilities of the copied creature trigger when the creature tokens enter the battlefield. The creature tokens also have any "this enters with" or "as this enters" abilities that the copied creature has.

If Followed Footsteps and the enchanted creature leave the battlefield simultaneously (say via Upheaval or Akroma's Vengence somehow cast in response to the triggered ability), then a token copy of the creature that was enchanted when it was last on the battlefield is created. If Followed Foosteps did not enchant a creature when last on the battlefield as it went to the graveyard as a state-based action when the enchanted creature left the battlefield in response to the trigger, then no copy will get created.

If Followed Footsteps moves after it has triggered, you get a copy of the newly-enchanted creature.