Kreischmaul

Verursacht Furcht (Diese Kreatur kann außer von Artefaktkreaturen und/oder schwarzen Kreaturen nicht geblockt werden.)
Wenn das Kreischmaul ins Spiel kommt, zerstöre eine nichtschwarze Nichtartefaktkreatur deiner Wahl.
Herbeirufen {1}{B} (Du kannst diesen Zauberspruch für seine Herbeirufungskosten wirken. Falls du dies tust, wird die Kreatur geopfert, wenn sie ins Spiel kommt.)

Hurlegueule

Peur (Cette créature ne peut pas être bloquée excepté par des créatures-artefacts et/ou des créatures noires.)
Quand le Hurlegueule arrive sur le champ de bataille, détruisez une créature non-artefact, non-noire ciblée.
Évocation {1}{B} (Vous pouvez lancer ce sort pour son coût d'évocation. Si vous faites ainsi, il est sacrifié quand il arrive sur le champ de bataille.)

Fauce Urlante

Paura (Questa creatura non può essere bloccata tranne che da creature artefatto e/o creature nere.)
Quando la Fauce Urlante entra nel campo di battaglia, distruggi una creatura non artefatto, non nera bersaglio.
Apparire {1}{B} (Puoi lanciare questa magia pagando il suo costo di apparire. Se lo fai, viene sacrificata quando entra nel campo di battaglia.)

叫び大口

畏怖（このクリーチャーは、アーティファクトでも黒でもないクリーチャーにはブロックされない。）
叫び大口が戦場に出たとき、アーティファクトでも黒でもないクリーチャー１体を対象とする。それを破壊する。
想起{1}{B}（あなたはこの呪文を想起コストで唱えてもよい。そうしたなら、これが戦場に出たとき、これを生け贄に捧げる。）

Shriekmaw

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When this creature enters, destroy target nonartifact, nonblack creature.
Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Murders at Karlov Manor Commander

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.
Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Forgotten Realms Commander

Time Spiral Remastered

Commander 2020

The List

If you pay the evoke cost, you can have Shriekmaw's own triggered ability resolve before the evoke triggered ability. You can cast spells after that ability resolves but before you have to sacrifice Shriekmaw.

To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an evoke cost), add any cost increases, then apply any cost reductions. The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.