Spooky20

Each land is a Forest in addition to its other land types.

Wintermoon Mesa enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Wintermoon Mesa: Tap two target lands.

{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

{T}: Add {C}. {2}, {T}: You may put a basic land card from your hand onto the battlefield tapped.

{T}: Add {C}{C}. Activate only if you control five or more lands.

{T}: Add {C}. {T}: Add {B} or {G}. Activate only if you control a Swamp.

{T}: Add {C}. As long as Riftstone Portal is in your graveyard, lands you control have "{T}: Add {G} or {W}."

When Treva's Ruins enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand. {T}: Add {G}, {W}, or {U}.

{T}: Add {C}. {G}, {T}: Regenerate target creature.

{T}: Add {C}. {T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.

Treetop Village enters the battlefield tapped. {T}: Add {G}. {1}{G}: Treetop Village becomes a 3/3 green Ape creature with trample until end of t...

{T}: Add {C}. Threshold — {G}{W}: Nantuko Monastery becomes a 4/4 green and white Insect Monk creature with first strike until end of turn. It's s...

{T}: Add {C}. {T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.

{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

{T}: Add {C}. {T}: Add {B} or {R}. Activate only if you control a Swamp.

{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

{T}: Choose a color. Add one mana of that color unless any player pays {1}. Activate only as an instant.

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

Spawning Pool enters the battlefield tapped. {T}: Add {B}. {1}{B}: Spawning Pool becomes a 1/1 black Skeleton creature with "{B}: Regenerate this...

{T}: Add {C}. {4}, {T}, Sacrifice a land: Rath's Edge deals 1 damage to any target.

{T}: Add {C}. {2}, {T}, Sacrifice Terminal Moraine: Search your library for a basic land card, put that card onto the battlefield tapped, then shuf...

({T}: Add {R}.)

({T}: Add {B}.)