艾克+劍舞之心SEkko W passive deals % missing-HP damage — late, easily 30%. Blade Waltz triggers it every hit, same with Fan the Hammer and Ethereal Weapon. The hex core strength is W passive, not the triple-ring. Most champs grab Blade Waltz for invuln — Ekko grabs it for explosive damage.
蓋倫+劍舞之心SMax damage build using Blade Waltz invuln for full damage uptime. Engage with E then Waltz; pick AD/crit damage forge, top up crit chance with shards if you're under cap.
伊羅旖+幻影武器SEthereal Weapon lets W stay up indefinitely — Q the enemy and tentacles slam infinitely; ult speeds tentacle swings by 50%. Don't use W up.
娜菲芮+觸發地獄火狂襲SNaafiri's wolves count as separate ability casts — R in, EQ, and you stack S-rank Triggered Inferno instantly. With W invuln + AD bonus, damage is maxed. Open with R, EQ in face, W to mitigate.