Command Bridge
The rainbow land that charges rent. Fixing that produces any color has almost always come with a fixed tax paid up front: a life payment on a shockland, a bounced permanent, an enters-tapped clause on the slower cycles. This one takes a different toll, and it takes it at arrival. Because it enters tapped, it never contributes color the moment you play it, and the sacrifice trigger demands a live untapped permanent to pay with or the land dies before it does a thing. That second cost is the real design lever: it prices the land against your board development rather than your life total. Tapping a creature that would rather be attacking, or a mana rock you were about to use, or another land is the friction that determines when this is worth playing. On a fully built board the tap is trivial; on a stumbling opener, when you least want a tapped rainbow source, the payment bites hardest. The result is fixing that rewards patience and punishes greed, the inverse of a land that costs life (which taxes you most when your resources are already thin). Once it resolves and untaps, it is a clean any-color source with no further strings, which is why the entire cost of the card lives in the single window between its arrival and its first activation.
