Bulwark of Setting Sun

{t}: Add {w} to your mana pool.
{w}, {t}: Add {r} or {g} to your mana pool.
{2}, {t}: Tap target creature with vigilance.
"The Sun Empire is protected by the Bulwark: a colossal gate that has guarded the golden city for
over a millennia. Today, we're gonna jump it."
- Chief Engineer Maku