2016-01-22

A spell that can’t be countered can still be targeted by spells or abilities that would counter it. The part of their effect that would counter the spell won’t do anything, but any other effects those spells or abilities may have will still happen, if applicable.

2024-11-08

A spell or ability that counters spells can still target Sphinx of the Final Word or any other spell that can't be countered. When that spell or ability resolves, the spell won't be countered, but any additional effects of the countering spell or ability will still happen.