msem-instigator

Flash (You may cast this spell any time you could cast an instant.)
Defender
When Weary Steward enters the battlefield, prevent all combat damage target creature would deal this turn.

When Weathered Pilgrim enters the battlefield, return target card from your graveyard to your hand.

When Weaver of Mists enters the battlefield, substantiate target card in your graveyard. (Put it onto the battlefield face down as a 2/2 creature. You may turn it face up and cast it at any time for its mana cost if it isn't a creature.)
Spells you cast from anywhere other than your hand cost {1} less to cast.

When Weeping Yaoguai enters the battlefield, create a 1/1 colorless Spirit creature token.
Scavenge {3}{B} ({3}{B}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

When Whisper Witch enters the battlefield, choose up to one target creature. That creature's controller mills four cards, then puts that creature on top of their library.

Flying, trample
When Whisper in the Rift enters the battlefield, target player mills half their library, rounded down.
When Whisper in the Rift dies, you may cast up to two instant, sorcery, and/or creature cards from among opponent's graveyards without paying their mana cost.

When Whisperwoods Reclaimer enters the battlefield, if there are three or more land cards in your graveyard, return target land card from your graveyard to the battlefield tapped.

When Whistling Blades enters the battlefield, you may destroy target creature or planeswalker.
Recite {1}{B}{B} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters the battlefield or if it would leave the battlefield.)

When Whiterun Ordainer enters the battlefield, you gain 4 life.

When Wild Entourage enters the battlefield, create two 1/1 colorless Construct Actor creature tokens.
{4}{G}: Wild Entourage gets +2/+2 and gains trample until end of turn.

When Wild Festivities enters the battlefield or at the beginning of your upkeep, you may put a creature card from your hand onto the battlefield. If you do, each opponent creates a 1/1 blue Frog creature token.

Erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order.)
When Wild Gravetender enters the battlefield, you gain 2 life for each creature card in your graveyard.
{1}{G}, Sacrifice a creature: Return Wild Gravetender from your graveyard to your hand.

When Wild Waypoint enters the battlefield, create a 1/1 green Scout creature token.
{T}: Add {B}, {G}, or {U}.

When Wildborn Merchant enters the battlefield, each player discards their hand, then draws X cards, where X is the number of Nobles you control.

When Wilderness Forager enters the battlefield, you may reappropriate. If you do, gain 6 life. Otherwise, gain 3 life. (To reappropriate, exile exactly two cards from your hand and/or graveyard.)

Harmony — You may pay {1}{G}. If you do, create a 3/3 green Beast creature token.
When Wildheart Chorister enters the battlefield, harmonize. (Trigger up to one harmony of a permanent you control.)

(Choose only one work as a sorcery to add its ability.)
When Wildlife Sketches enters the battlefield, reveal the top five cards of your library. Put a creature card from among them into your hand and the rest on the bottom in any order.
{1}{G}: Carnation Petals
You may cast creature spells as though they had flash.
{3}{G}: Pecking Order
At the beginning of your upkeep, you may sacrifice a creature. If you do, search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put it onto the battlefield, then shuffle.

When Wildsong Summoner enters the battlefield, shuffle your library, then reveal cards from the top until you reveal a permanent card. Create a token that's a copy of that card, except it's a 3/3 green Beast creature. Put all cards revealed this way on the bottom of your library in a random order.

Flash (You may cast this spell any time you could cast an instant.)
When Wind-Blessed Guardian enters the battlefield, you may return target permanent you control to its owner's hand.

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

Flying
When Windrider Elemental enters the battlefield, target creature gains flying until end of turn.

Flying
When Windwielder enters the battlefield, you may return target Inscription card from your graveyard to your hand.

Flying
When Winged Guardian enters the battlefield, return up to one target nonland permanent to its owner's hand.

Vigilance, reach
When Winter Widow enters the battlefield, you may destroy target creature with flying.

Flash
When Wiretapper enters the battlefield, choose one —
• Exile target spell. For as long as that card remains exiled, its owner may play it. A spell cast this way costs {2} more to cast.
• Create a copy of the card with target spell's name. You may cast the copy. (You still pay its costs.)