My mappers found a mirror on Friday, so I decided it was time to move on from my leaguestarter RF-turned-Burning Arrow of Vigour Chieftain and settled on a Splitting Steel Trickster. Since I see a lot of questions asking "what do with 1 mirror (or xxxdivs) and a mageblood", thought I'd share how I spent it.
PoB: https://pobb.in/-PDYfaiFSW29 dps is for 1 proj, 10x that with snipe+nimis.
To be honest, I don't exactly know how much I spent. I gambled away some of the mirror, sold some of the BA pieces, probably closer to 1000D overall, but you can probably get to within 10% of this setup for 1 Mirror. I also went the lazy route because I CBA to fossil craft or buy dozens of bases to recombine, so I blew a good chunk of the budget on the rare armour pieces. Crafting the gear yourself should be a lot cheaper (Sheepishly on youtube seems to have pretty good guides on how to go about it)
I think I got pretty close to what you can get out of the build before you start buying mirrored pieces, but I've never played the SS nor Trickster and haven't touched CI in years, so please let me know if I missed something obvious that I could upgrade :D
Edit: Since I know y'all, I might as well drop a pob for that BA Chief too: https://pobb.in/z7Ao5FbNwPtF