msem-instigator

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
You may play cards exiled with Fahrib and you may spend mana as though it were mana of any color to play them.
{U}{B}: Demon — Each player exiles a card from their hand.
{4}{U}{B}: Elder — Exile the top five cards of each player's library. Fahrib gains “Spells you cast from anywhere other than your hand cost {2} less to cast.”

{U}{R}{W}, Discard a card named Sha'Iv, God of Order: Sha'Iv gains indestructible and becomes a God creature in addition to its other types.
Whenever Sha'Iv enters or attacks, choose target creature an opponent controls. Untap it, then tap each other creature that player controls. They don't untap during their controller's next untap step.

When Overgrowth Guardian enters, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Flash
When Twisted Speaker enters, return target spell to its owner's hand. That spell's controller loses 2 life.

Destroy target artifact or land.

Surveil 2, then you draw a card and you lose 1 life. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
{2}{B}, Exile Corrupted Knowledge from your graveyard: Each opponent loses 2 life and you gain 2 life.

[+1]: Prevent all damage that would be dealt to up to one other target permanent until your next turn.
[–2]: Target creature gets +3/+3 until your next turn.
[–3]: Untap all nonland permanents you control.

When Faithless Deserter enters, you may sacrifice a creature. If you do, each opponent sacrifices a creature.

{2}{B}{B}, Exile Reclusive Augur from your graveyard: Return another target creature card from your graveyard to the battlefield. Activate only during your turn.

Flying
{1}{U}, Sacrifice Fatewrench: Fateseal 2. (To fateseal 2, look at the top two cards of an opponent's library, then put any number of them on the bottom of that player's library and the rest on top in any order.)

If you would search your library for one or more cards, you may search for an additional card. (It still follows the same restrictions and effects.)

For each creature, its owner puts it on the top or bottom of their library.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Nizev Brawler enters, target creature can't block this turn.

First strike
When Soulstone Commander enters, return target Soldier creature card from your graveyard to the battlefield. That creature is a Spirit in addition to its other types.

Destroy target non-Elf creature. Its controller loses 1 life for each Elf you control.

Enchant creature
You control enchanted creature.
Enchanted creature gets +1/+1 and has slipstream. (This creature can't be blocked as long as only creatures with slipstream are attacking.)

Eureka! (At the beginning of each end step, you get a research counter if you cast a spell this turn. Then if you have eight or more research counters, remove them and create a Masterpiece token of your choice.)
At the beginning of your first end step each turn, you get an additional end step after this step.

{3}, {T}: Glimmering Staff deals 1 damage to any target.
{5}, {T}: Put a -1/-1 counter on target creature.

Each opponent loses X life and you gain X life, where X is the number of Illusions you control.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
You don't lose unspent red mana as steps and phases end.
I, II — Add {R}{R}.
III — Create a 3/3 red Phoenix creature token with flying, haste, and “{R}: This creature gets +1/+0 until end of turn.”

Target creature you control gains protection from the color of your choice until end of turn. (Then exile this card. You may cast the creature later from exile.)

Trample
Phoberos Ragehorn has haste as long as you control another Minotaur.
Whenever Phoberos Ragehorn attacks, each player discards a card.

Street Busker gets +2/+0 as long as you've gained life this turn.

When Remnant of the Hunt leaves your graveyard, create a token that's a copy of it, except it has no mana cost.
Revive {3}{G}{G} ({3}{G}{G}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

Trample
Overgrown Spellroot gets +1/+1 for each creature token you control.
When Overgrown Spellroot enters, create four 1/1 black Worm creature tokens.