This Elemental creature seems too expensive for Standard, but Pioneer and Commander players look fondly at Nyxbloom Ancient.
It probably won't have a massive support, as this is simply a "win more" card, meaning that if you already have seven mana to cast it, then you're winning anyway.
You will surely see it in Simic Ramp decks both in Standard and Pioneer, alongside Hydroid Krasis and Uro, Titan of Nature's Wrath. The Pioneer lists also usually run Walking Ballista, and that's where Nyxbloom Ancient will play a huge role.
It should settle somewhere around $10 price unless it will have some unexpected results, although that is doubtful.