How to get regieleki and regidrago?

To get Regieleki and Regidrago you must have the extension DLC for both Isle of Armor and Crown Tundra. When in the crown tundra follow all of the objectives until you get to the missions. To get the regi's you need to do the second mission, which is to collect all the regi's. To collect the regi's you need to find the temple and to enter will need to do a riddle for each of them. The temples are spread across crowned tundra. Once in the temple you must light every dot except the last temple where you have to do a pattern to get one of the regi's you will need to catch the regi's once you entered the temple. Dusk balls are the best for catching the regi's. When you collected Regirock, Regice, and Registeel you can enter the temple with regieleki and regidrago. But beware once you choose a regi you can't get the other regi. The only way to get the other regi is to trade.