User blog comment:Atmey/Aghanim's Scepter/@comment-1601181-20120910172840/@comment-98.28.155.99-20120910184651

Basically, you use Sonic Wave/Resonating Strike before ultimate, so it's on cd,right? So, if you use R on the enemy, you get to Resonating Strike as the secondary. Like a Dragon's Rage/Resonating Strike.