msem-instigator

Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Whenever Wild Lifescale attacks, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Wild Pyromancy deals 2 damage to each creature, player, and planeswalker. If you cast this spell during your main phase, Wild Pyromancy deals 3 damage to each creature, player, and planeswalker instead.

Create three 1/1 red Goblin creature tokens.

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

Whenever a creature blocks Wildborn Courtesan, draw a card.
{R}{R}: Untap target creature an opponent controls. That creature blocks Wildborn Courtesan this turn if able.

Assault {2}{G} (Whenever this attacks, if it has no +1/+1 counters on it, you may pay its assault cost to put a +1/+1 counter on it.)
When Wildborn Marauder assaults, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

When Wilderness Forager enters, 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.)

Creatures with power less than or equal to the number of creatures in Wildershrine Elder's pack can't block it. (Two or more creatures you control with equal power are in a pack.)

Wildfire Elemental has frenzy 4 as long as you control no other creatures. (Whenever this creature attacks and isn't blocked, it gets +4/+0 until end of turn.)
Wildfire Elemental has frenzy 4 as long as you have no cards in hand.

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

When Wildsong Summoner enters, 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.

At the beginning of each player's upkeep, you may exile target permanent that player controls. If you do, return that card to the battlefield under its owner's control at the beginning of the next end step.

Create two 1/1 colorless Samurai creature token. Those creatures gain first strike until end of turn.

When Wilting Waif dies, each opponent discards a card at random and you scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Flying

Enchant creature
You may cast this spell from your graveyard if it targets a legendary creature you control.
Enchanted creature gets +2/+2 and has flying.

{2}{U}: Return Windcaller Capuchin to its owner's hand.

Exile the top five cards of your library. An opponent separates them into two piles. You may put one pile into your hand or draw two cards. Then put the rest of the piles into your graveyard.

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

All creatures get -1/-1 until end of turn.
If ten or more cards are in your graveyard, creatures your opponents control get an additional -1/-1 until end of turn.

Flying
Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{3}{U}: Target creature you control gains flying until end of turn.

Flying
Windwatch Eagle has vigilance as long as it has a +1/+1 counter on it.

Flying
Windwise Courier has indestructible as long as you've revealed a card from your hand this turn.