Fluid Control Magic

Fluid Control Magic is a caster type magic that gives water mages the control or ability to manipulate fluid in a living organism's body. When a mage puts this magic into service, they can stop an organism's blood flow to the brain and the rest of the body. The user can also control the fluid to operate the creature's body such as the arms, legs, and etc. However using the magic comes at a cost of tremendous amounts of magic energy and the user's life. Being a powerful magic, it has a massive limitation. The biggest limitation is that only water mages are able to use this magic as a replacement on the day of a solar eclipse when the moon covers the sun. On normal days, the magic is impossible to use as it requires the full presence of the moon and the complete absence of the sun. Last but not least, if the creature that has fluid control magic been casted on, is able to lose the grip of the magic, the user can not use fluid control magic on them whatsoever.