msem-instigator

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.)

When Wise Farseer Chini enters the battlefield, create a tapped colorless land token named Far-Off Lands with “{T}: Add one mana of any color.”

When Wistful Fox enters the battlefield, reveal the top eight cards of your library. You may put a creature card from among them into your hand. Put the rest on the bottom of your library in a random order.

Flying
When Witch of Spring's Promise enters the battlefield, shuffle any number of cards from your hand into your library, then draw that many cards plus one.

When Witch's Invitation enters the battlefield, you may put a -1/-1 counter on target creature.
{2}, {T}: Tap target creature with a -1/-1 counter on it.

Flash
When Witch's Invocation enters the battlefield, draw a card.
You may cast spells as though they had flash.

Witchseeker Mob's power and toughness are each equal to twice the number of Citizens and/or Peasants you control.
When Witchseeker Mob enters the battlefield, exile target nonland permanent an opponent controls with mana value less than or equal to Witchseeker Mob's power until Witchseeker Mob leaves the battlefield.

When Wizened Calligrapher enters the battlefield, you may search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top of it.

When Wolfbriar Sapling enters the battlefield, if you control seven or more lands, create a 2/2 green Wolf creature token.

When Woodcutter's Hatchet enters the battlefield, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Equipped creature gets +2/+2.
Equip {2}

When Woopip Bruiser enters the battlefield, germinate. When you do, you may have target non-Fungus creature get -X/-X until end of turn, where X is the greatest power among creatures you control. (To germinate, put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Harmony — Germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
When Woopip Chef enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

When Woopip Elder enters the battlefield, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

When Woopip Sproutling enters the battlefield, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)