Definitely not S tier lol. No druid build can be S tier in pvm.. but your gear is seriously lacking.
ravenlore with new fire jewel
6x rbf weapon
eni
phoenix
magefist
arach
any boots
2/18+ or 2/8+ amu
fcr ring + soj or 2 fcr rings
infy merc with flickering flame and coh/skin of the flayed one
spam volcano fissure armageddon and fire storm
oh ya forgot to mention that i have enig, and infi merc
i agree it's nowhere near S-tier, plus i think it's the janky skill rotation that feels clunkiest about the playstyle, especially trying to account for volcano's CD and maximizing its uptime