![Riftbound Unit: Jhin, Meticulous Killer. [Vision]
If you've spent [4] or more to play a spell this turn, you may play me for [C].](https://cmsassets.rgpub.io/sanity/images/dsfx7636/game_data_live/992e0a23ba7ad3fe88410f023bb1311195e1863a-744x1039.png?accountingTag=RB&w=744&fm=webp)
If I play Singularity and my opponent counters it, can I still play Jhin, Meticulous Killer for [C] this turn?
You can. Jhin checks the energy spent to play a spell, not whether that spell resolved. If the energy was spent and the spell became a Finalized Chain Item (and was not undone, for example as part of step 5 of the process of play) then it doesn't matter if the spell is later countered. The energy wasn't unspent, even if the spell was countered.