Chosen follower of the Bringer of Tides
As an action, choose one creature within range of 60ft with blood, that creature has to make a STR 17 save. On a failed save, you may take the rest of your turn as that creature (bonus action + movement). Then, you can either fully control the creatures next turn (you are unable to cast any spells as the creature) OR you can force the creature to take a CON 5 save, on a failed save the creature drops to 0 HP as all the blood in it's body rushes to its heart, causing it to rupture in its chest.
2 charges, resets after a long rest.