Underground Riverutility$1.93A blue-black pain land that fixes both colors immediately, serving the same two-color utility role. It enters untapped and produces either color with a small life payment.
Dimir Aqueductutility$0.22A Dimir dual land that produces both colors, but it does so by returning a land to hand instead of using a mana activation. It fills the same fixing role for UB decks at a slower rate.
Sunken Hollowutility$0.38A UB dual land with basic land types, giving strong fixing in decks that can support it. It overlaps the same color identity and is often a better late-game land than Catacombs.
Drowned Catacombutility$1.85A very close Dimir dual land that taps for either color and often enters untapped in the right deck. It serves the same primary fixing purpose.
Choked Estuaryutility$0.35Another UB dual that can enter untapped by revealing a basic land. It plays a similar role as a flexible two-color fixer in Dimir decks.
Shipwreck Marshutility$6.39A newer Dimir dual land that commonly enters untapped in the early game. It provides the same two-color fixing with better efficiency than Catacombs in many decks.
Watery Graveutility$11.34A premium UB shock land that gives immediate access to both colors and can enter untapped at a life cost. It is a strict upgrade in speed for many decks.
Undercity Sewersutility$23.25A UB surveil dual that adds card selection alongside mana fixing. It fills the same Dimir land slot while offering extra value.