Seat of the Synod [Commander 2018] SWSH159 negate the effects of all

negate the effects of all face-up monsters your opponent controls until the end of the Damage Step

Set: Dimension of Chaos Card type: Normal Trap Rarity: Secret Rare When an opponent's monster declares an attack: Destroy as many Attack Position monsters your opponent controls as possible

It's still a land

) You can only Special Summon "Ritual Beast Tamer Elder(s)" once per turn

remove those counters

Seat of the Synod [Commander 2018] SWSH159 negate the effects of allSet: Commander 2018 Type: Artifact Land Rarity: Common (Seat of the Synod isn't a spell.) {T}: Add {U}. Lumengrid, site of the Knowledge Pool, source of vedalken arcana.