Trainer but its an epic Xcom Legacy bossfight theme

"Commander, you may want to instruct your men to exercise restraint when using pokeballs"
"Hello Commander, we intercepted several transmissions mentioning the word, "MEW2" this may have something to do with the alien's Avatar project. "

https://www.deviantart.com/cg-sammu/art/Pokemon-Sculpt-Realistic-Mewtwo-2013-421980274