Spooky20

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Forest you control to its owner's hand. {T}: Add {C}{G}.

({T}: Add {W}.) This land enters tapped. {W}, {T}: Put target card from your graveyard on the bottom of your library. Activate only if you control ...

{T}: Add {C}. {T}: Untap target Griffin. If it's a creature, it gets +1/+1 until end of turn.

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Swamp you control to its owner's hand. {T}: Add {C}{B}.

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Mountain you control to its owner's hand. {T}: Add {C}{R}.

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Island you control to its owner's hand. {T}: Add {C}{U}.

({T}: Add {R}.) This land enters tapped. {R}, {T}: Shuffle your library. Activate only if you control two or more red permanents.

({T}: Add {B}.) This land enters tapped. {B}, {T}: Each opponent loses 1 life. Activate only if you control two or more black permanents.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U} or {R}.)

({T}: Add {U} or {R}.)

({T}: Add {U} or {B}.)

({T}: Add {U} or {B}.)

({T}: Add {W} or {U}.)

({T}: Add {W} or {U}.)

({T}: Add {G} or {U}.)

({T}: Add {G} or {U}.)

({T}: Add {R} or {G}.)

({T}: Add {R} or {G}.)

({T}: Add {B}.)

({T}: Add {B}.)