Honkai Star Rail's Version 4.0 drops two Elation-path powerhouses with shared Punchline mechanics but vastly different roles. Yao Guang (Physical support, Feb 12-Mar 6) hits 80% potential at E0S0, with E2 delivering 18-24% team DPS gains. Sparxie (Fire DPS, Mar 6-26) operates at 65-70% baseline, requiring higher eidolon investment. Both average 75-80 pulls per copy with E2 as the critical breaking point. This guide breaks down eidolon-by-eidolon value, team synergies, and investment ROI for the Planarcadia meta.