The premier shielder in Honkai: Star Rail. Aventurine provides stackable Fortified Wager shields to the entire party while unleashing a 7-hit follow-up attack that scales entirely off DEF. His Leverage trace converts DEF stacking into up to 48% CRIT Rate, making him both the best sustain and a genuine damage contributor.
Deals Imaginary DMG equal to 50% of Aventurine's DEF to a single target enemy. Low priority in regular gameplay since the Skill should take precedence for shield upkeep, but scales meaningfully from the DEF-stacking build.
Provides all allies with a Fortified Wager shield that blocks DMG equal to 16% of Aventurine's DEF plus 80, lasting for 3 turns. Repeatedly gaining Fortified Wager stacks the Shield effect, capped at 200% of the current Skill's shield value. Your primary action each turn to maintain team protection.
Randomly gains 1 to 7 points of Blind Bet. Inflicts Unnerved on a single target enemy for 3 turns and deals Imaginary DMG equal to 162% of Aventurine's DEF. While Unnerved is active, any ally who hits that enemy deals +9% CRIT DMG. A massive single-target burst that also bolsters the entire team's critical damage.
Increases Effect RES by 25% for a single ally with Fortified Wager. When that ally is attacked, Aventurine gains 1 Blind Bet point. When Aventurine has Fortified Wager he can resist Crowd Control debuffs (resets after 2 turns). Gains an additional Blind Bet after being attacked. At 7 Blind Bet points consumed, launches a 7-hit follow-up attack dealing Imaginary DMG equal to 12.5% DEF per hit to a random enemy. Blind Bet caps at 10 points.
After using the Technique, one of three effects is granted at random: a chance for DEF +24%, a high chance for DEF +36%, or a small chance for DEF +60%. When the Technique is used repeatedly, the highest buff value is retained. When the next battle starts, increases all allies' DEF by the rolled value for 3 turns.
Aventurine is the top sustain choice for follow-up attack teams and works as premium shielding in virtually any composition. His Unnerved debuff (+9% CRIT DMG) and Blind Bet follow-up add offensive value beyond pure sustain.