Grasp of Avarice, Phry'zia the Insatiable Boss, Solo two phase, Hunter, Lightfall, Leviathan's Breath, Destiny 2

I was able to 2-Phase this boss last season with the Cataclysmic. The cataclysmic was much weaker since no solo-operative and weakened clear, so I wanted to find an alternative. Leviathan's breath was perfect. There is very low room for error. Can't miss too many crits and risk losing archer's tempo on the catalyst (the consistent damage from that is needed). When his health drops past a certain point he will move all over the place making it hard to maintain crits. This makes first phase very important, since I can get him to about 45% health, leaving me more room to miss a few shots on the second phase.