Throne of Eldraine

Mana Cost: {5}
Total Cost: 5
Type: Legendary Artifact
Description: As Throne of Eldraine enters, choose a color.
{T}: Add four mana of the chosen color. Spend this mana only to cast monocolored spells of that color.
{3}, {T}: Draw two cards. Spend only mana of the chosen color to activate this ability.