燃える魂、サルカン
伝説のクリーチャー — 人間・シャーマン
あなたがドラゴン・呪文を唱えるためのコストは少なくなる。
あなたがコントロールしているドラゴン１体が戦場に出るたび、「ターン終了時まで、これは名前が『燃える魂、サルカン』であり、他のタイプに加えて伝説であることを除き、それのコピーになる。」を選んでもよい。
イラスト：
Tarkir: Dragonstorm Commander#301神話レア日本語適正
裁定
Sarkhan's first ability doesn't change the mana cost or mana value of any Dragon spell. It changes only the total cost you pay.
That ability can't reduce the amount of colored mana you pay for a Dragon spell. It reduces only the generic component of that cost.
Sarkhan copies exactly what was printed on the original Dragon and nothing else, with the noted exceptions (unless that creature is a token; see below). It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on in response to Sarkhan's ability.
If the copied Dragon has 
in its mana cost, X is 0.
If the copied Dragon is a token, Sarkhan copies the original characteristics of that token as stated by the effect that created that token, with the noted exceptions.
In some unusual cases, the Dragon that entered the battlefield will be copying something else by the time Sarkhan's ability resolves. In such a case, Sarkhan will copy whatever the Dragon is copying, with the noted exceptions.
If the Dragon that enters the battlefield is legendary and you have Sarkhan copy it, the two Dragons will have different names (unless the entering Dragon is somehow named Sarkhan, Soul Aflame). The "legend rule" won't apply.