Verschleierte Schlange

Wenn einer Deiner Gegner erfolgreich einen Zauberspruch spricht und die Verschleierte Schlange eine Verzauberung ist, wird die Verschleierte Schlange zu einer 4/4 Kreatur, die als Schlange zählt und die nicht angreifen kann, wenn der verteidigende Spieler nicht mindestens eine Insel kontrolliert.
Umwandlung 2

Serpiente velada

Grand serpent voilé

Serpente Velato

仮装の大海蛇

Serpente Velada

Veiled Serpent

When an opponent casts a spell, if Veiled Serpent is an enchantment, Veiled Serpent becomes a 4/4 Serpent creature with "This creature can't attack unless defending player controls an Island."
Cycling {2} ({2}, Discard this card: Draw a card.)

Dominaria Remastered

When an opponent casts a spell, if Veiled Serpent is an enchantment, Veiled Serpent becomes a 4/4 Serpent creature with "This creature can't attack unless defending player controls an Island." (It's no longer an enchantment.)
Cycling {2} ({2}, Discard this card: Draw a card.)

Urza's Saga

When one of your opponents successfully casts a spell, if Veiled Serpent is an enchantment, Veiled Serpent becomes a 4/4 creature that cannot attack unless defending player controls an island and that counts as a Serpent.
Cycling o2 (You may pay o2 and discard this card from your hand to draw a card. Play this ability as an instant.)

It changes into a creature even if the spell is countered.

It triggers when the spell is cast, which means it becomes a creature before that spell resolves.

When it turns into a creature, it is no longer an enchantment.

A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.