Death Ray - Mk 3
Piltover & Zaun -
Spell 
Fast:
Can be played whenever you may act. Happens after your opponent has a chance to react.
"The beam melts flesh and metal alike with exceptional speed! I have since eagerly integrated it onto my machine body. To see, feel, and dissect the world with such CLARITY... This is the great potential of the human mind unburdened by flesh! A truly glorious evolution!"
- Viktor's design annotations