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Nonbasic lands don't untap during their controllers' untap steps.

Manglehorn

When Manglehorn enters, you may destroy target artifact.
Artifacts your opponents control enter tapped.

Seedborn Muse

Untap all permanents you control during each other player's untap step.

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Archelos, Lagoon Mystic

As long as Archelos, Lagoon Mystic is tapped, other permanents enter tapped.
As long as Archelos is untapped, other permanents enter untapped.

Collector Ouphe

Activated abilities of artifacts can't be activated.

Frozen Aether

Artifacts, creatures, and lands your opponents control enter tapped.

Static Orb

As long as Static Orb is untapped, players can't untap more than two permanents during their untap steps.

Energy Flux

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."

Stasis

Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Root Maze

Damping Sphere

If a land is tapped for two or more mana, it produces {C} instead of any other type and amount.
Each spell a player casts costs {1} more to cast for each other spell that player has cast this turn.