Grimlore's Grimoire
1-level Conjuration
You raise your hands in a grasping gesture around a
creature's neck and begin to fill their lungs with water. The
target must succeed on a Constitution saving throw or take
1d8 cold damage, and on your turn(s), you can use your
action to deal 1d8 cold damage to the target automatically.
While the target is affected by the spell, it is considered to
be holding its breath. The target can hold its breath for 1 + its
Constitution modifier minutes (minimum of 30 seconds),
then begins choking. The spell ends if you use your action to
do anything else or the target moves more than 30 feet away
from you or dies. At the end of each of its turns, the target can
make a Constitution saving throw. On a success, the spell
ends.
This spell has no effect on creatures who don't need to
breathe or can breathe underwater.