msem-instigator

({T}: Add {R}.)
As Highland Dunes enters the battlefield, you may pay 1 life. If you don't, Highland Dunes enters the battlefield tapped.

{T}: Add {C}.
{2}, {T}: Prevent all combat damage target creature would deal this turn.

The Last Sacred Gate enters the battlefield tapped.
While you're searching your library, you may play The Last Sacred Gate from your library. (You may only do so during your turn and if you have a land play remaining.)
{T}: Add {C}.

({T}: Add {G} or {U}.)
Monsoon Lagoon enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

Prismatic Cavern enters the battlefield tapped.
When Prismatic Cavern enters the battlefield, return a land you control to its owner's hand.
{T}: Add {C} and one mana of any color.

{T}, Sacrifice Renewal Grove: Search your library for a basic land card, put it onto the battlefield, then shuffle. If Renewal Grove entered the battlefield this turn, that land doesn't untap during your next untap step.

({T}: Add {R} or {W}.)
Rugged Fields enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

({T}: Add {U}.)
As Saturated Dunes enters the battlefield, you may pay 1 life. If you don't, Saturated Dunes enters the battlefield tapped.

({T}: Add {G}.)
Seedshrine enters the battlefield tapped.
When Seedshrine enters the battlefield, you may put a +1/+1 counter on target creature.

({T}: Add {B}.)
As Stygian Dunes enters the battlefield, you may pay 1 life. If you don't, Stygian Dunes enters the battlefield tapped.

({T}: Add {G} or {W}.)
Sungrace Meadows enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

({T}: Add {W}.)
Sunstage enters the battlefield tapped.
When Sunstage enters the battlefield, creatures you control get +0/+1 until end of turn.

({T}: Add {B} or {R}.)
Urban Wastelands enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

If an opponent controls more lands than you, search your library for a Plains card. If an opponent controls more creatures than you, search your library for a creature card with mana value 2 or less. Reveal those cards, put them into your hand, then shuffle.