Mox Amber

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

Blightsteel Colossus

Trample, infect, indestructible
If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Rakdos Signet

Izzet Signet

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Mox Opal

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

Boros Signet

Mox Jet

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Azorius Signet

Selesnya Signet

Mox Pearl

Simic Signet

Mox Sapphire

Dimir Signet

Progenitus

Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.