Raging River (Retro) [30th Anniversary Edition] Urza's You may spend mana as

You may spend mana as though it were mana of any type to cast creature spells

You may cast Secret Lair spells as though they had flash

Will gasped as Rowan drew from the raw power of the Strixhaven Snarl

you’ll flip a Disaster card featuring a Natural

Extra material: It is highly recommended that you have pens/pencils

Raging River (Retro) [30th Anniversary Edition] Urza's You may spend mana asSet: 30th Anniversary Edition Type: Enchantment Rarity: Rare Cost: {R}{R} Whenever one or more creatures you control attack, each defending player divides all creatures without flying they control into a "left" pile and a "right" pile. Then, for each attacking creature you control, choose "left" or "right." That creature can't be blocked this combat except by creatures with flying and creatures in a pile with the chosen label.