Rain of Death looks pretty...only if you don't cancel the animation with another instant cast (which bards have plenty of) and wait out the entire animation (which is longer than your default 2.5 GCD). Both Wide Volley and RoD are inefficent when it comes to TP; quick notch is simply more reliable unless you can't hit them all in a cone (which really isn't that hard considering your effective range).

One Ilm Punch is good for those stone-skin happy FATE mobs... but that's about it really. It has no place otherwise since the damage is lower than that of twin snakes (which comes with a damage buff no less).