It's not like Aggro in the Aggro colors was a new theme that united those colors
It does take time to build, being a stage 2 evolution card and requiring three energy to power its only attack
A-Tier: Overperforming Cards That Defined Standard in 2025 Enduring Curiosity Role: The premier card-advantage engine of UB and Esper midrange Few cards proved as essential to the years midrange landscape as Enduring Curiosity , whose ability to generate repeated value made it a staple across multiple blue-black archetypes
While the two sides don't specifically synergize, they both represent parts of an overall stax/control strategy that play well together
You can easily see that it has the potential to kill three, but you won't know for sure what it'll do until you draw it in a particular game
Honestly, you can pair anyone you want with Ishai, as this bird monk works just fine on its own