They only cost anywhere between one and three mana, and they'll stay on the battlefield until destroyed, bounced, or sacrificed
For starters, its flexible - costing X plus three mana - making it easy to scale up or down accordingly
Selesnya decks are typically all about life gain and steadily growing creatures through the use of counters, and while the counter aspect is present on T'Challa, the life gain aspect is currently missing
The Gitrog Monster | Illustration by Jason Kang Posted by Alex G on Youtube Frog is a generic creature type in Magic, primarily in the Sultai color spectrum, which only recently received a unifying mechanical identity in Bloomburrow
Very importantly, the build demonstrates that the folks designing the decks in Studio X are paying attention to Commanders target demographic
Adding extra loyalty counters makes them do silly things, such as using their ultimate abilities immediately