Caged Sun

Six mana for a doubler is the price you pay for a doubler that also touches the board. Gauntlet of Power offered the mana-doubling half symmetrically, handing the same boost to every player running the chosen color; the redesign here trims away that generosity, keeping the +1/+1 anthem and the extra mana strictly for the controller. That self-only framing is what turns a fragile group-hug artifact into a single-color engine you can actually build around. The doubler clause is also narrower than it looks: it triggers only when a land's ability adds mana of the chosen color, so it ignores mana rocks, rituals, and creatures entirely. A mono-color deck whose acceleration runs through its lands rather than its artifacts gets the full benefit; a deck leaning on dorks and Signets sees the anthem and little else. The +1/+1 rider is the quiet justification for the cost. A mana doubler that does nothing the turn it lands is a six-mana liability, but bolting an anthem onto the same card means the investment shows up immediately on the battlefield even before the mana compounds. It is a piece of design built squarely for the most committed mono-color manabases, where every untapped land becomes two of your color and your creatures grow a step for free.