>>38324055OP specifically said they can only use pokemon from their region: No mewtwos or gardevoir of their own
They can only get unlimited necrozma at best, and each universe ends with mutually-assured destruction with hoenn at best.
This best also assumes that Gardevoirs have no control over their singularities once they are created, but I would assume they must since obviously the world that the pokedex entry stating so was written in wasn't destroyed.
"Black hole" lets you cheat pretty hard in this rock-paper-scissors game
