This is my league starter. Using Darkscorn (27c bow), self-crafted gears and cluster jewels. No crazily expensive pieces. My starting budget is 2ex-3ex for Sirus AL6 and slowly increasing towards wave-20 Simulacrum but should not be too expensive.

Blast Rain (11 arrows explosion), paired with cluster jewels increasing skill effect duration, generates 15/15 near 100% uptime. Very well-rounded and enjoyable build for me this league.

https://pastebin.com/XJAY1t7t