cosmic preserve

this creature, called the regu, was onced feared for millenia. but it was soon discovered that it healed any planet it touched, giving it life. it comes from an alternate dimension that has long collapsed, way before the big bang, making it the last living thing of its home dimension. it is immortal, can speak all languages, past present and future, and it can make any planet life bearing. it is not evil, but seeks to care for the galaxy, and as such, the galactic council set a preserve where it's free and cared for. you are one of the caretakers for the creature, and it sees you as a friend.