Ultimate Counter (Fiora)

Ultimate Counter is the second skill in 's Rashness skill branch (and thus limited to ). It guarantees that all counter-attacks are also critical hits.

Overview
Crits are good, and this skill gives Fiora more of them. It does however require her to have some means of counter-attacks active, since the base rate is zero. It's also horrendeously expensive to link, so it'll be hard for anyone else to enjoy.