msem-instigator

Whenever a nontoken creature you control dies, create a 1/1 black Spirit creature token with flying.
[+1]: Each opponent loses 2 life and you gain 2 life.
[–2]: You may sacrifice a creature. When you do, destroy target nonland permanent.

Exile target card from a graveyard. If this spell was foretold, create a 2/1 white Soldier creature token.
Draw a card.
Foretell {W} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever a Survivor you control enters, you may draw a card. If you do, discard a card.

Each opponent sacrifices an artifact, an enchantment, and a creature with flying.

[progress 2+]
[progress 5+]
Whenever a creature enters, each opponent loses 1 life.

Flash
When Duplicated Dismantler enters, if you cast another spell this turn, return target spell to its owner's hand.

When Adamant Healer enters, you may move any number of counters from target creature onto another target creature with the same controller.

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.)

Whenever a creature you control attacks and isn't blocked, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)

Majestic Nauticorn has first strike as long as it's attacking.
Cycling {W} ({W}, Discard this card: Draw a card.)

Destroy target creature. If you control a Wizard, put up to one target creature card from your graveyard on top of your library.

{1}: Exile target card from a graveyard.
At the beginning of combat on your turn, if there are three or more card types among cards exiled with Respectful Tracker, put a +1/+1 counter on target creature you control.

Target opponent mills five cards. Then exile a card milled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

Deploy 4 (As this enters, you may tap any number of other creatures you control with total power 4 or more.)
When Revolutionary Recruiters enters deployed, gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Deathtouch
When Shadowed Apostle dies, draw a card.

When Marauder's Broadsword enters, you may pay {1}. If you do, create a 1/1 white Soldier creature token and attach Marauder's Broadsword to it.
Equipped creature gets +2/+0.
Equip {2}

{4}{R}, Sacrifice Lavahurler: It deals 5 damage to target player or planeswalker.

Whenever Voracious Spawn enters or attacks, exile up to one target card from a graveyard. If you exile a permanent card, put a +1/+1 counter on Voracious Spawn. If you exile a nonpermanent card, you gain 1 life.

At the beginning of your upkeep, each player draws a card.

Indestructible
Immortal Child can't block creatures with greater power.

Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the end step.)
Each other creature you control gets +1/+1 for each creature you control with the same name as it. (A token's name is its creature types unless specified.)

Flying
Whenever a creature you don't control deals damage, its controller sacrifices it unless that player pays {2}.

Imitator of Drakes has flying as long as it has a +1/+1 counter on it.
{2}{U}: Put a +1/+1 counter on Imitator of Drakes.

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Creatures you control gain indestructible until end of turn. If this spell's tithe was paid, put a +1/+1 counter on each creature you control.

When you cast your third noncreature spell each turn, transform Aspiring Rascals.