Spectator Seating [Commander Legends] Nightmare Horse Whenever a creature you control

Whenever a creature you control of the chosen type enters the battlefield or attacks

Creatures you control have "{T}: Add {U} or {R}

you may cast an instant or sorcery spell from your hand without paying its mana cost

Set: Oversize Cards Type: Dungeon — Undercity Rarity: Common You can't enter this dungeon unless you “venture into Undercity”

you'll have to do better than that

Spectator Seating [Commander Legends] Nightmare Horse Whenever a creature you controlSet: Commander Legends Type: Land Rarity: Rare Spectator Seating enters the battlefield tapped unless you have two or more opponents. {T}: Add {R} or {W}. The loudest and most heartfelt cheers come from the cheap seats.