Prevented attacks until Mikaeus, the Lunarch activations spoiled his triggered ability, at which point he could still block one a turn but couldn't kill anything anymore
In their sneak peek video, Ichikawa revealed that the partnership will include characters from the first Final Fantasy to the recently released Final Fantasy XVI
With the new world order pushing the power level of creatures, planeswalkers, and threats in general so hard in the last five years, getting ahead on mana and on the board is critically important, and not much does that better than a turn one mana creature
And when Jace survives, it usually means you get to cast Collected Company again
Then with some extra untappers, like Vizier of Tumbling Sands, you can untap Ioreth and repeat the process as many times as you can turn her sideways