I swear, if it's anything I need more of in Heroes, it's Refining Stones and Divine Dew. Excalibur, Wing Sword, and Parthia all still need their refines.
Refining Stones I've been finding easy to get lately, although I barely have any Killer weapons to refine yet. But after getting the pack from the store, I do have a good amount of Refine stones. Divine Dew is still a pain.
Also, something I forgot to mention a while ago:
-I got a +HP, -ATK Lute from my Free Summon from the Tempest Banner. I was tempted to pick the lone Green stone compared to the other 4 Blue Stones, but I decided to get the blue one next to it and got Lute.
-Also, I am loving my Flier Emblem Team of L!Ryoma with Firesweep Sword+, NY!Azura, Bride Ninian(both with Wings of Mercy 3) and Summer Corrin with Blarblade+, Life&Death3, Desperation 3 and Glimmer. Ryoma and Corrin practically destroy everything and get back to safety quickly.
-I'm using 5-Star Linus for my Bonus Unit for TT. And he's been doing very good for me. Almost there at that Live to Serve Seal.
-Corrin with his Yato Refine practically helps me solo alot of the content. Combined with the different Spurs, Drives and whatnot, he's also great for Training units as well, much like his NY self.