UBTComp_SelectorRandom is a custom Unreal Engine Behavior Tree node that randomly selects and executes child nodes without repetition until all are tried. It returns success if any child succeeds and resets after all children fail.
https://dev.epicgames.com/community/learning/tutorials/8JL3/unreal-engine-random-selector-behavior-tree-custom-composite-node
Leaving a note to check this out.