Trigger

Signature. 25% DEF Shred, 20% stackable Combat Impact%, 24% CRIT Rate — all maintained indefinitely via Aftershocks. Shiyu: 32,882 | DA: 28,500. No other option comes close.

Lighter's signature works well on Trigger — Aftershocks count as Basic Attacks to activate it. +30% Ice/Fire CRIT DMG for the whole party plus Combat Impact from Defensive Assists. Second best in Ice/Fire teams (Miyabi, Evelyn); solid elsewhere for the Impact bonus.

Qingyi's signature (2.09% usage, Shiyu: 31,809). Aftershocks stack it quickly — Trigger can reach and hold 15 stacks in most scenarios for Combat Impact and 20% team DMG. Good universal pick if you have it.

Best non-limited choice (7.39% usage, Shiyu: 28,615). Stackable Daze% and Basic ATK DMG%. Aftershocks easily maintain 3+ stacks; 5 stacks achievable post-EX/Ultimate for a burst window.

Situational but spikes in Deadly Assault where enemies stay at high HP (DA: 22,771 vs Shiyu: 28,345). Outperforms Steam Oven in those modes. Average performance in Shiyu Defense.

Higher Impact ceiling than Fossilized Core but requires managing in-combat uptime (1.3% usage, Shiyu: 29,128). Best in standard Shiyu Defense fights; falls behind Fossilized Core in Deadly Assault.

Koleda's signature (1.43% usage, Shiyu: 27,980). Trigger struggles to maintain more than 1 stack consistently — she doesn't spam EX Specials like other Stun agents. Comparable Daze to Vortex Arrow but with noticeably higher personal DMG.