Cool strategy for fighting Gromp as Nautilus

Gromp doesn't have a lot of attack damage, but gains a huge burst of attack speed at the start of when you fight him. If you use Titan's Wrath at the start of the fight, it won't last long at all.

However, Gromp's attack speed buff only lasts around 5 auto attacks. If you use Titan's Wrath after this, you can keep the shield for a significantly longer amount of time, even if you don't get early levels in your W.