Talk:Sorrow Sibyl Eliza/@comment-169.244.89.66-20150415124145/@comment-25179062-20150417132512

A crit rate leader skill would stack with a crit rate buff. When you activate a buff on BB/SBB, it replaces any active buffs of the same time.

It is true that when damage is calculated, crit rate is hard capped at 70%. However, if an enemy has crit reistance (or future enimies can cast crit down debuff) starting with a crit rate above 70% could help ensure you can still hit the 70% cap after the enemies reduce your crit rate.