Looking at the most recent MtGTop8 MTGO League (
https://mtgtop8.com/event?e=55647&f=LE), here are the cards that would get stopped by this:
Reanimator: 4 Grief, 4 Unmask, 4 Lotus Petal
Rhinos: 4 Fow, 4 FoN, 3 Crashing Footfalls, 2 Endurance (+1 Endurance in the sideboard)
Beanstalk: 4 FoW, 3 Daze (Sideboard: 1 FoN, 1 Force of Vigor, 1 Surgical Extraction)
Lands: 4 Mox Diamond (Sideboard: 3 Force of Vigor)
Control: 2 Endurance, 2 Solitude, 4 FoW (Sideboard: 2 Force of Vigor, 2 Surgical Extraction)
Control: 4 FoW (Sideboard: 3 Surgical Extraction)
Ranimator: 4 Grief, 4 Daze, 4 FoW
Ranimator: 4 Grief, 4 Daze, 4 FoW (Sideboard: 1 FoN, 2 Mindbreak Trap, 2 Surgical Extraction)
72/480 = 15% of maindeck cards
91/600 = 15.17% of total cards
This card looks to mainly affect Grief and FoW. There were no decks in this top 8 with baubles, which this would also hit. This cards is almost a combination of a Chalice on 0 + spells can't be countered, at least for the early game.