Thank you for making Draftsim your #1 stop for all things Magic
The card itself is a pretty solid commander staple, allowing you to counter a non-creature spell for only a single blue, at the expense of giving the opponent two treasure tokens, but for the low cost and the kitty Jace, the community has deemed it a worthwhile tradeoff in the number four spot
Do You Have to Cast Suspend Cards
Honorable Mention #1 and #2 - Liesa, Shroud of Dusk AND Dargo, the Shipwrecker The problem with these two potential leaders is very powerful
Its especially fun in spells-matter decks where every cantrip or counterspell gives you either more tokens or repeat enters effects
Players wanting to build a Shrine commander before didn't have a card that specifically called out the Shrine subtype, so Go-Shintai is a welcome addition to the format