Does Prodigal Explorer / Ezreal's legend trigger work with Singularity, which chooses multiple targets at once?

Ruling: Yes, Ezreal's legend trigger will activate after playing Singularity because Singularity makes you choose two enemy units, satisfying the "chosen enemy units twice this turn" condition.

Nuances:

• The key distinction is that Ezreal says "twice" rather than "two times", meaning choosing two units simultaneously counts as choosing twice
• This was a new card at the time of discussion and official clarification was pending, but was confirmed by plinq