Misty’s Favor is found in the Unified Minds card set. The card also appears in the Japanese Miracle Twin set as the original release.

Card set details

  • English set: Unified Minds.
  • Japanese set: Miracle Twin.
  • There are multiple versions, including a regular print and a full-art/secret rare version.

Version examples

Version| Set| Card number
---|---|---
Regular| Unified Minds| 202/236 38
Full Art| Unified Minds| 235/236 14
Japanese release| Miracle Twin| 104/094 28

TL;DR: Unified Minds is the English set you’re looking for.