msem-instigator

{4}{B}{R}: Exile Watch the World Fade from your hand with seven apocalypse counters on it.
At the beginning of your upkeep, if Watch the World Fade is exiled, remove an apocalypse counter from it. If you do, each opponent loses 3 life unless they discard a card or sacrifice a nonland permanent. When you remove the last counter this way, each player loses the game.

Waterfront Market enters the battlefield tapped unless you control a basic land.
{T}: Add {W} or {U}.

{T}, Pay 1 life, Sacrifice Wayfarer's Shrine: Search your library for a basic land card, put it onto the battlefield, then shuffle.

As Weathered Fortress enters the battlefield, you may torment yourself. If you don't, it enters the battlefield tapped. (You lose 3 life unless you discard a card or sacrifice a nonland permanent.)
{T}: Add {U} or {R}.

{T}: Add {C}.
Tap three differently named untapped Academies you control: Draw a card.

Whispering Canal enters the battlefield tapped unless you control a basic land.
{T}: Add {U} or {B}.

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

{T}: Add {C}.
{T}: Each opponent may draw a card. For each player who does, draw a card.

Wild Peak enters the battlefield tapped unless you have 15 or less life.
{T}: Add {R} or {G}.

Wild Ravine enters the battlefield tapped unless you control two or more red and/or green permanents.
{T}: Add {R} or {G}.

Wild Realms enters the battlefield tapped unless you control two or more other lands.
{T}: Add {G}.
{T}, Pay 1 life: Add {R} or {W}.

{T}: Add {C}.
{5}, {T}, Sacrifice Wildkin Grove: Create three 1/1 colorless Shapeshifter creature tokens with changeling. (They're every creature type.)

Wildrune Thicket enters the battlefield tapped unless you have two or more opponents.
{T}: Add {R} or {G}.

Wind-Scarred Crag enters the battlefield tapped.
When Wind-Scarred Crag enters the battlefield, you gain 1 life.
{T}: Add {R} or {W}.

Whenever one or more creatures attack you or a planeswalker you control, put a charge counter on Windmill Project.
{T}: Add {C}.
{T}, Remove X charge counters from Windmill Project: Add X mana in any combination of colors.

Windworn Spires enters the battlefield tapped.
{T}: Add {R}.
Desertcycling {1}{R} ({1}{R}, Discard this card: Search your library for a Desert card, reveal it, and put it into your hand, then shuffle.)

Wise Old Oak enters the battlefield tapped unless you control a basic Forest.
{T}: Add {G}.
{3}{G}{G}: Until end of turn, Wise Old Oak becomes a 4/4 green Treefolk creature with “Whenever this creature deals combat damage to a player, draw a card.” It's still a land.

{T}: Add {C}.
{3}, {T}: Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast Aura or Aurashaper spells.

({T}: Add {B}.)
Wretched Sanctuary enters the battlefield tapped with two sanctum counters on it.
{T}, Remove a sanctum counter from Wretched Sanctuary: Add {U} or {R}.

When Zhedina Exchange enters the battlefield, choose a basic land type.
Basic lands you control of the chosen type have “{T}: Add one mana of any color.”
{T}: Add {C}.

{3}, Reveal Zhedina Outskirts from your hand: Put Zhedina Outskirts from your hand onto the battlefield tapped.
{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Archive 3 (As this enters the battlefield, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
{T}: Add {C}.
{1}, {T}: Scry 1.