I've been doing this since the Inverted Spire was the only playable strike in the beta. I'm surprised I haven't seen anyone else do this yet : r/destiny2
The Inverted Spire - Destiny 2 Wiki Guide - IGN
The Inverted Spire - Destinypedia, the Destiny wiki
SamiKat on Twitter: "I was today years old when I realized that Protheon, the boss in the Inverted Spire strike, took on all three elements AND CHANGED COLORS during boss fight. Void