
Description
Every time you play 3 Attacks in a single turn, gain 1 Strength.
Blade Dance generates 3 Shivs (attacks). Playing them hits Shuriken's 3-attack threshold, granting 1 Strength.
Shivs from Infinite Blades count toward Shuriken's 3-attack threshold, granting Strength passively each turn.
Ninja Scroll starts combat with 3 Shivs in hand. Playing them immediately triggers Shuriken for +1 Strength on the first turn.
Hitting Shuriken's 3-attack threshold boosts Strength, which in turn scales Finisher's damage.