msem-instigator

Menace
Whenever you sacrifice an artifact or creature, Lava Scutterer deals 2 damage to any target.

Whenever Ontarachie Hunter attacks, each opponent loses 1 life.
At the beginning of your end step, if an opponent has 10 or less life, transform Ontarachie Hunter.

If a player would draw one or more cards, instead that player draws that many cards plus one and loses 1 life.

Sacrifice another creature: Grindlesnap gets +3/+2 and gains trample until end of turn if that creature was a Crocodile. Otherwise, it gets +1/+1 until end of turn.
Whenever Grindlesnap is dealt combat damage, create a 3/2 green Crocodile creature token with trample.

At the beginning of your upkeep, reveal the top two cards of your library. An opponent chooses one. Put the chosen card into your hand and exile the other.
{4}, {T}: Put a card exiled with The Knowledge Hub into its owner's hand.

Look at the top eight cards of your library. Put up to two creature cards with mana value 5 or less from among them onto the battlefield under your control. Put the rest on the bottom of your library in a random order.
Menagerie — If there are five or more creature types among creatures you control, if an ability of a permanent you control is triggered this turn, that ability triggers an additional time.

Draw two cards, then you may foretell a card with foretell from your hand. It costs {0} to foretell this way. You lose 2 life. (You don't reveal that card. You can't foretell cards without foretell in this way.)

When Leyran Spellchainer enters, return target instant or sorcery card from your graveyard to your hand.
{2}{R}: Transform Leyran Spellchainer. Activate only if it's attacking.

{T}: Add {C}.
{T}: Put a +1/+1 counter on each legendary creature and a loyalty counter on each planeswalker that you control entered this turn.

As Vaertris' Master Plan enters, exile the top five cards of any player's library.
You may play cards exiled with Vaertris' Master Plan.
When there are no cards exiled with Vaertris' Master Plan, return it to its owner's hand.

Thunderous Applause deals damage to any target equal to the number of tapped creatures you control.

Target player can't cast spells this turn.
Fabled {2}{W}{U} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that player.)

Stoic Djinn has flying as long as it has a counter on it.

Vigilance
When this creature dies, target creature you control seeks secrets or valor. (Give it that Oath Aura. Fulfill secrets by attacking with it and two or more other creatures to draw a card. Fulfill valor by dealing combat damage to a player to create a 2/1 white Soldier token.)

Choose one —
• Destroy target artifact.
• You gain 4 life.

{T}: Add {R}.
{R}, {T}: Target creature gains haste until end of turn.

Whenever another creature you control dies, put a +1/+1 counter on Belligerent Mob.

When Refuse Trawler enters, you may pay {G}. If you do, choose one —
• Return a permanent card from your graveyard to your hand.
• Rediscover a permanent card. (Look at the top card of your library. You may reveal it and put it into your hand if it's a permanent card. Otherwise, put it back or into your graveyard.)

Flying
Whenever an artifact you control leaves the battlefield, scry 1.

Whenever Anima Interrogator attacks, defending player reveals a card at random from their hand.

Defender (This creature can't attack.)
Discard a card: Barge Engulfer can attack as though it didn't have defender until end of turn.

Indestructible
Lands you control have “{T}: Add {G}{G}.”
{5}{G}{G}: Double the power and toughness of each creature you control until end of turn.

Haste
When Gilded Gearhulk enters, you may destroy target noncreature, nonland permanent.

Whenever you cast an instant or sorcery spell, put a loyalty counter on Reytali of Endless Muses.
[0]: Add X mana in any combination of colors, where X is the number of spells you've cast this turn.
[–3]: Create two 3/1 red Sand creature tokens with haste.

{3}, {T}: Draw a card.
Crew 3 (Tap any number of creatures you control with total power 3 or greater: This Vehicle becomes an artifact creature until end of turn.)