https://youtu.be/wz3blGGZLVU?si=E7hulJqDoXXLaduY


From Riot:
"For duration of the patch, Pengu Garen is freely selectable for Garen in all modes EXCLUDING Ranked Solo/Duo, Ranked Flex, & Clash. Pengu is exclusively available for April Fools' and will be leaving the Rift after two weeks."