Create Ender Chwinga

While speaking an intricate incantation, you cut a tear in the universe. The tear then transforms into a special construct called a Ender Chwinga.

 It is your faithful companion, and it dies if you die. Whenever you finish a long rest, you can spend up to half your Hit Dice if the Ender Chwinga is on the same plane of existence as you. When you do so, roll each die and add your Constitution modifier to it. Your hit point maximum is reduced by the total, and the Ender Chwinga’s hit point maximum and current hit points are both increased by it. This process can reduce you to no lower than 1 hit point, and the change to your and the Ender Chwinga’s hit points ends when you finish your next long rest. The reduction to your hit point maximum can’t be removed by any means before then, except by the Ender Chwinga’s death.