msem-instigator

Creatures your opponents control enter the battlefield tapped.
{7}{W}: Tap all creatures target player controls.

Trample
Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)

Whenever Ravencaller or another creature enters the battlefield from your graveyard, create a 1/1 blue Bird creature token with flying.

Haste
Augmented — Whenever you cast a spell, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on Bolstered Guardian. It loses this ability and gains “Whenever this attacks, it deals 2 damage to each of up to two targets.”

Enchant creature
When Knight's Daring enters the battlefield, put two +1/+1 counters on enchanted creature.
Whenever enchanted creature deals combat damage to a player, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

Whenever a creature blocks, Heat of Battle deals 1 damage to that creature's controller.

Flying
Whenever Spirit of Vitriol attacks, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
Discard a card: Spirit of Vitriol gains hexproof until end of turn. Tap it.

Enshrouded Village enters the battlefield tapped.
{T}: Add {G}.
{1}{G}{G}: Until end of turn, Enshrouded Village becomes a 4/4 Human creature with trample. Activate only if you're horrific.

When Sasori Nightrunner enters the battlefield, create a 2/2 colorless Spirit creature token.
Whenever a colorless creature you control dies, each opponent loses 1 life.

Whenever a creature enters the battlefield under your control, if it wasn't cast from your hand, you may mill a number of cards equal to its mana value. If you do, you may return a noncreature card milled this way from your graveyard to your hand.

This spell costs {X} less to cast, where X is your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)
Trample

When Student of the Scroll enters the battlefield, scry 2.

Choose one —
• Target player sacrifices a creature.
• Target player reveals their hand. Choose a creature card from it. They discard that card.

Whenever you cast a spell that's red, green, white, or blue, each opponent loses 1 life and you gain 1 life.

The first instant or sorcery spell you cast each turn has convoke. (Each creature you tap while casting that spell pays for {1} or one mana of that creature's color.)

Dazzling Duelist has first strike as long as it's attacking.
{2}{R}: Dazzling Duelist gets +2/+0 until end of turn.

Vision (Whenever this or another creature enters the battlefield under your control, reveal the top card of your library. Then you may put that card into your graveyard.)
Whenever Weaver of the Winds envisions an instant or sorcery card, draw a card.

Creatures you control get +2/+2.
Wanderlust — As long as you control four or more differently named lands, creatures you control have trample and can't be blocked by more than one creature.

Each other Okus planeswalker you control enters the battlefield with two additional loyalty counters on it.
[–2]: Draw two cards, then discard a card.

Desert Storm deals 6 damage to target creature.

Draw two cards.
Rerun (If you cast this from your hand, exile it as it resolves. Whenever a creature you control dies, you may cast this card from exile without paying its mana cost.)

Menagerie — When Lurking Feralynx enters the battlefield, if there are five or more creature types among creatures you control, you may search your library for a card named Lurking Feralynx, reveal it, put it into your hand, then shuffle.

Until end of turn, target creature loses all abilities and has base power and toughness 1/1. Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Defender
Whenever you cast an instant or sorcery spell, you may untap Almgrove Sentinel.
{T}: Almgrove Sentinel deals 1 damage to any target.

Hexproof
Each creature you control with a card inscribed onto it has hexproof.