Underground River [Commander 2016] RC28 and it can block creatures

and it can block creatures with flying

Set: Champion Pack 2 Card type: Effect Monster Rarity: Rare Attack: 1800 Defense: 1300 Once per turn

Set: The Lost Millennium Card type: Effect Monster Rarity: Common Attack: 500 Defense: 600 You can flip this card into face-down Defense Position once per turn during your Main Phase

Set: 2018 Mega-Tins Mega Pack Card type: Effect Monster Rarity: Ultra Rare Attack: 2300 Defense: 1500 To Tribute Summon this card face-up

Underground River [Commander 2016] RC28 and it can block creaturesSet: Commander 2016 Type: Land Rarity: Rare {T}: Add {C}. {T}: Add {U} or {B}. Underground River deals 1 damage to you.