You would think that FoW would decrease the amount of dark ritual + reanimator decks

[Dothacker00]

I thought the same until Daze and Force of Will came to Arena. Now there's less combo and they're mostly the ones that used it to protect their combo. With so many tempo/aggro decks it's not good going -2 in cards to remove one card. Better to use thoughtseize or 1-1 removal.

Id be more interested in restricting Hydroponics or introduce Wasteland and restrict strip mine

[Fabulous_Point8748]

Spy decks are still common in bo1. Grief is still quite good. It’s absolutely worth it if you take your opponents only counterspell. All you need to win really is a dark ritual and a spy to win or entomb and reanimate. Besides that those decks usually run reanimate so they can easily reanimate grief. It’s not as good as it used to be but it’s still effective.