Dark
Terrarian
Except it still has pretty much the same dps as Tsunami.You can afford to get hit on expert, the only thing you really gotta dodge is the phantasmal death ray, or the destroyers body. other than that, you can easily afford hits, even at 100 damage taken, when you got proper accessories like the worm scarf and other defensive boosts along with some mobility. Also, you can pretty much simulate the mana flowers auto potion by using those manually.
Also regarding that phantasm nerf: From my point of view the phantasm should out-DPS the Tsunami in most, if not all cases, just for the simple fact, that is a higher Tier bow, as in: The highest Tier bow currently available.
One may argue that the Tsunami is a boss drop, but if we are given a new End-game-tier Bow, why make it worse than already existing bows? Unless you can give some serious reason for doing so, I'll have to agree on the Phantasm being overly nerfed. Period.