Pressure Point
Instant
Tap target creature.
Draw a card.
By studying dragon anatomy, Jeskai monks have learned how to locate clusters of nerves that will incapacitate even the mightiest dragons.
Illustrated by
Fate Reforged#21CommonEnglishLegality
Rulings
Sep 25, 2020
If the target creature is an illegal target by the time Pressure Point tries to resolve, the spell doesn't resolve. You don't draw a card. If the target is legal but doesn't become tapped (most likely because it's already tapped), you do draw a card.