Xander-Reinhardt-BigKnockOut

So I run the Cavalry Team metagame (Xander, Rein, Cecilia, and Brave Lyn), and Rein is almost always the one who engages and nukes immediately a powerful enemy unit. I always have Xander Reposition Rein out of combat to protect him from physical retaliation, so having the two paired up was a natural idea because they always were next to each other, or nearby, anyway.