msem-instigator

As long as Vinehorn Stag has a +1/+1 counter on it, it can't be blocked by more than one creature.

Destroy target nontoken artifact. Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

When Viridian Townships enters, create two Idol tokens. (They're artifacts with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
{2}, Sacrifice an Idol: Draw a card.
{2}, Sacrifice an Idol: You gain 3 life.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Draw two cards. Then if you're in a renaissance, each opponent loses 2 life and you gain 2 life. Otherwise, you lose 2 life.

Vulpine Bluffs enters tapped.
{T}: Add {R} or {W}.
{1}{R}{W}: Until end of turn, Vulpine Bluffs becomes a Fox creature with double strike in addition to its other types.
Scavenge {R}{W}

Create a 2/1 red and white Fox creature token. If you're attacking, that token enters tapped and attacking.
Showcase {4}{R} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

Exile target nonland permanent. Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

When a creature you control scavenges Wanderer of Many, create a token that's a copy of that creature. Put a +1/+1 counter on the copy.
Scavenge {3}{U} ({3}{U}, 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.)

Flying, ward {3}
Inspired — Whenever Wang Xi becomes untapped, choose a nonbasic card name, then reveal the top five cards of your library. Put all cards with the chosen name from among them into your hand and the rest on the bottom of your library in any order.

Flying
Whenever Warden of the Divine Court attacks, creatures in its pack get +1/+1 until end of turn. (Two or more creatures you control with equal power are in a pack.)

Trample
Warlord of Wun Su can't block alone.

Whenever a creature you control enters for the second time each turn, you may put a +1/+1 counter on Warren Wardens.

Whenever a creature in Water Sutra Daoshi's pack dies, return a creature card with lesser mana value than that creature from your graveyard to your hand. (Two or more creatures you control with equal power are in a pack.)

Flying
Whenever another creature you control enters, you may have Waxing Celestial get +1/+1 until end of turn.

Create an 8/8 blue Kraken creature token.
{2}{U}, Discard Wealth of the Flood: Create a Treasure token. Scry 2.

When Weeping Yaoguai enters, 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.)

[+1]: Until your next turn, when up to one target creature dies, return a creature card with lesser mana value from your graveyard to the battlefield tapped.
[–1]: Target player discards a card. When they do, return a card with equal mana value from your graveyard to your hand.
[–2]: You may sacrifice a creature. When you do, exile target nonland permanent.

[0]: Create a 2/2 green Panda Bear Monk creature token with “When this creature dies, put a loyalty counter on a Ji planeswalker you control.”
[–2]: Each player sacrifices a nonland permanent. You may return a nonland permanent card from your graveyard to your hand.
[–6]: You get an emblem with “Whenever a permanent you control dies, you may search your library for a card that shares a card type with that permanent and put it onto the battlefield, then shuffle.”

Flying, lifelink
Creatures entering or leaving the battlefield don't cause abilities to trigger unless that creature is in a pack. (Two or more creatures a player controls with equal power are in a pack.)

As an additional cost to cast this spell, sacrifice a creature.
Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard.

At the beginning of combat on your turn, if you control a creature with power 4 or greater, put a +1/+1 counter on Wilderkin Zealot.
{R}{G}: Target creature gains trample until end of turn.

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.)

Surveil 1, then draw a card. (To surveil 1, look at the top card of your library. You may put that card into your graveyard.)
Create a tapped Treasure token.

{2}{R/G}: Wildershrine Warden gets +2/+2 until end of turn. You may have it assign its combat damage this turn as though it weren't blocked. Activate only once each turn.

(Choose only one work as a sorcery to add its ability.)
When Wildlife Sketches enters, 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.