Question: kyurem how to get oras?
Answer: Have both Zekrom and Reshiram in your Party.
Soar between Meteor Falls and Mt. Chimney to find the Gnarled Den.
Enter the Den and Catch Kyurem.
Head to the left with or without the Dowsing Machine to a small 1x1-ish tile and the DNA Splicers are there.