Raging River [Unlimited Edition] Guilds of Ravnica Add four mana of any

Add four mana of any one color

the Awoken World

you gain 1 life for each spell you've cast this turn

Whenever a basic land is tapped for mana of the chosen color

—Arab proverb

Raging River [Unlimited Edition] Guilds of Ravnica Add four mana of anySet: Unlimited 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.