Considering the foreground character's skin patterns, I think they might be neeko's followers (the the foreground character might be neeko herself?)
Legends of Runeterra
Set in the League of Legends universe, Legends of Runeterra is the strategy card game created by Riot Games where skill, creativity, and cleverness determine your success.
Ooh, that should be really interesting. Her "thing" is being able to transform into other champions, correct? That sounds like it would be really cool mechanic to have in LoR.
Yeah I think she might be a transform support, considering that the curious changelings is a transform card and have similar magic vibes to neeko I later also noticed the fire blobs in the background, which probably means milio is being added as well. This begs the question of how they are going to put 3 shurimans (I think nidalee is hinted in the other artwork?) in the same expansion (well technically ixtali but still). Maybe shurima nidalee, runeterra milio and bandle neeko?