Travelers who have reached the headwaters of Fool's Fall say that strange serpents dwell in the waters there, though none can recall any more than that.

Special Guests

Mystic Snake

Flash
When Mystic Snake enters the battlefield, counter target spell.

Flash
When Mystic Snake enters, counter target spell.

Its fangs are in your flesh before its hiss leaves your ears.

Masters 25

Commander 2015

Modern Masters 2015

Time Spiral Timeshifted

Flash (You may play this spell any time you could play an instant.)
When Mystic Snake comes into play, counter target spell.

Apocalypse

You may play Mystic Snake any time you could play an instant.
When Mystic Snake comes into play, counter target spell.