Mesmerizing Thalassophidis

Deathtouch
Whenever Mesmerizing Thalassophidis attacks,
you may pay {1}{u}. If you do, tap target creature
you don't control.
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If you hear it, flee as fast as you can, otherwise you'll
lose yourself in that beast's hypnotic patterns. Don't
try to fight it, for a drop of poison from its fangs and
thorns can be lethal.