msem-instigator

{T}: Add {C}.
{1}: Clutch of the Coil becomes a 1/1 Snake creature with poisonous 2 until end of turn. It's still a land. (Whenever this creature deals combat damage to a player, that player gets two poison counters.)

When Edge of the World enters the battlefield, each player draws a card.
{T}: Each player adds {C}.

{T}: Add {C}.
{1}, {T}, Sacrifice a creature: Create a 1/1 colorless Spirit creature token.

{T}: Add {C}.
When Heavenly Temple enters the battlefield, target creature gains flying until end of turn.
{2}: Return Heavenly Temple from the battlefield to its owner's hand.

{T}: Add {C}.
{T}, Exile Memorial of the Fallen: Shuffle your graveyard into your library.

{T}: Add {C}.
{3}: Mill two cards, then return Midnight Keep from your graveyard to the battlefield tapped.

{T}: Add {C}.
{1}, {T}, Sacrifice Perilous Passage: Destroy target nonbasic land. Activate only if an opponent controls four or more lands.

Planar Alignment enters the battlefield tapped.
{T}: Add {C}.
{6}, {T}, Exile Planar Alignment: Search your library for a card, put it into your hand, then shuffle.

Ripping Wilds enters the battlefield tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice Ripping Wilds: You may put up to two basic land cards from your hand onto the battlefield tapped.

{T}: Add {C}.
Discard Shikai's Redoubt: Exile up to two target cards from graveyards.

Sunrise Orchard enters the battlefield tapped.
{T}: Untap another target land you control.

{T}: Add {C}.
{9}, {T}, Exile Whiterun Gates: Take an extra turn after this one.

{T}: Add {C}.
{T}: Add {C}{C}. You can't spend this mana to cast spells or activate abilities of lands.

Chamber of Splendor enters the battlefield tapped.
When Chamber of Splendor enters the battlefield, you may pay {1}. If you do, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
{T}: Add {C}.

{T}: Add {C}.
{T}: Target land you control becomes the basic land type of your choice until end of turn.

{T}, Sacrifice Palace of Reflections: Choose a land you control. Search your library for a land card with the same name as the chosen land, put it onto the battlefield tapped, then shuffle.

{T}: Add {C}.
As long as Shengin Heartland is in your graveyard, lands you control have “{T}: Add {G} or {U}.”

({T}: Add {W}.)
Bygone Guardian enters the battlefield tapped.
Vigilance
{2}{W}{W}: Bygone Guardian becomes a creature in addition to its other types until end of turn.

({T}: Add {U}.)
Aerie's Pillar enters the battlefield tapped.
Flying
{2}{U}{U}: Aerie's Pillar becomes a creature in addition to its other types until end of turn.

({T}: Add {B}.)
Forgotten Pit enters the battlefield tapped.
Deathtouch
{2}{B}{B}: Forgotten Pit becomes a creature in addition to its other types until end of turn.

({T}: Add {R}.)
Rousing Rubble enters the battlefield tapped.
Double strike
{2}{R}{R}: Rousing Rubble becomes a creature in addition to its other types until end of turn.

({T}: Add {G}.)
Lumbering Hillock enters the battlefield tapped.
Trample
{2}{G}{G}: Lumbering Hillock becomes a creature in addition to its other types until end of turn.

({T}: Add {W} or {U}.)
Whenever Sedate Tundra becomes tapped, you lose 1 life unless you control two or more basic lands.

({T}: Add {U} or {B}.)
Whenever Murmuring Falls becomes tapped, you lose 1 life unless you control two or more basic lands.

({T}: Add {B} or {R}.)
Whenever Crumbling Precipice becomes tapped, you lose 1 life unless you control two or more basic lands.