It has quite a monstrous power level as well as lots of good synergies one the one hand and on the other it is designed to be on the awkward side and is so hard to cast that it is one of the narrower cards on this list
It grew from a combination of nostalgia, scarcity, economic behaviour, and cultural momentum
I remember really loving the asymmetrical color distribution, the attention it gave to a few underserved tribes, and the resources it granted to that only pre-constructed decks can often supply
However, this is also due to recent surge in demand for Pokemon products in North America, prompting the Japanese Pokmon sets to also surge in price
Were using them for life gain with Wayward ServantWayward Servant, and life drain with Plague BelcherPlague Belcher, Lost Monarch of IfnirLost Monarch of Ifnir, and Gempalm PolluterGempalm Polluter
While each of these cards can be of use to multiple Izzet strategies, the latter two really tend to thrive in artifact-centric decks with big instant and sorcery payoffs