Verschleiernder Äther

Verdeckte Kreaturenzauber, die du wirkst, kosten beim Wirken {1} weniger.
{1}{G}: Verdecke den Verschleiernden Äther. (Er wird zu einer 2/2 Kreatur.)

Éther obscurcissant

Les sorts de créature face cachée que vous lancez coûtent {1} de moins à lancer.
{1}{G} : Retournez l'Éther obscurcissant face cachée. (Il devient une créature 2/2.)

Etere Offuscante

Le magie creatura a faccia in giù che lanci costano {1} in meno per essere lanciate.
{1}{G}: Gira l'Etere Offuscante a faccia in giù. (Diventa una creatura 2/2.)

遮る霊気

あなたが裏向きのクリーチャー・呪文を唱えるためのコストは{1}少なくなる。
{1}{G}：遮る霊気を裏向きにする。（これは２/２のクリーチャーになる。）

Obscuring Aether

Face-down creature spells you cast cost {1} less to cast.
{1}{G}: Turn Obscuring Aether face down. (It becomes a 2/2 creature.)

Murders at Karlov Manor Commander

Dragons of Tarkir

Face-down creature spells you cast cost {1} less to cast.
{1}{G}: Turn Obscuring Æther face down. (It becomes a 2/2 creature.)

Note that Obscuring Aether doesn't have a morph cost. Once it's turned face down, it doesn't have a way to turn itself face up.

Obscuring Aether has no effect on spells that instruct you to manifest cards.