msem-instigator

Harmony — Warriors you control get +1/+0 and gain menace until end of turn.
Whenever Aleud Warcaller attacks, harmonize. (Trigger up to one harmony of a permanent you control.)

Flying, first strike, vigilance, trample, lifelink
{4}: Put a +1/+1 counter on Alin and Meva, Warqueens.

Create two 2/1 black and red Cat Pirate creature tokens with menace. You lose 2 life.

When All-Blossom Memorial enters, scry 1.
Prismatic — Whenever you cast a multicolored spell, you gain 1 life.
{T}: Add one mana of any color.

Infamy 1 (Whenever this creature deals combat damage to a player, if it has no +1/+1 counters on it, put a +1/+1 counter on it and it becomes infamous.)
When Alpha Scout becomes infamous, create a 2/2 green Wolf creature token.

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

Reach
Concord — Am'atambi's Fangs gets +1/+0 and has deathtouch as long as there are four or more card types among permanents you control.

Overclock (You may have this creature overclock an artifact you control when either enters. If you do, it stops overclocking any other artifacts.)
Overclocked artifact has “{R}, {T}: This artifact deals 1 damage to any target.”

When Amira, Grand Inventor enters, create a 1/1 colorless Construct Artificer artifact creature token. If you control six or more artifacts, create a 6/6 colorless Golem artifact creature token instead.
Artifact tokens you control have all activated abilities of other artifact tokens you control.

Each other Okus planeswalker you control enters with two additional loyalty counters on it.
[–2]: Each opponent discards a card and loses 2 life.

Each other Okus planeswalker you control enters with two additional loyalty counters on it.
[–2]: Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

{T}: Add one mana of any color.
{4}, {T}, Sacrifice Ancestral Tapestry: Search your library for a legendary card, reveal it, put it into your hand, then shuffle.

Sacrifice a creature. When you do, draw two cards. (Then exile this card. You may cast the creature later from exile.)

Exile the top five cards of your library. You may put a creature card from among them with mana value 2 or less onto the battlefield.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
When Arbiter of Shal'Iv enters, adjudicate. (Create a white enchantment Aura token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)

Arcane Oasis enters tapped unless you control another Desert.
{T}: Add {U} or {R}.

Flying, vigilance
As Archon of the Accord enters, choose a number.
Spells with mana value equal to the chosen number can't be cast.

Arid Causeway enters tapped unless you control another Desert.
{T}: Add {R} or {W}.

Deathtouch
Whenever another creature dies, you get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)
{4}{B}, {T}: Destroy target creature and Arrogant Entrant.

Draw two cards. You may cast an instant or sorcery spell with mana value X or less from your hand without paying its mana cost, where X is the number of cards in your hand.

Ashela, the Russet Grove enters tapped.
{T}: Add {C}.
{T}, Pay 1 life: Add {R}, {G} or {W}.
{3}, {T}: Return Ashela to its owner's hand.

Whenever Aspect of An'yama attacks, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Spells you cast from your graveyard, activated abilities of cards in your graveyard, and reprise costs of spells you cast cost {1} less.

Ward—Exile three cards from your graveyard. (Whenever this permanent becomes the target of a spell or ability an opponent controls, counter it unless that player exiles three cards from their graveyard.)
Menagerie — Astralhorn Familiar gets +2/+2 as long as there are five or more creature types among creatures you control.

Whenever equipped creature attacks, put a progress counter on Astrina, Tempered by Glory.
Equip {1}
[PROGRESS 1-2] Equipped creature gets +1/+1 and has first strike.
[PROGRESS 3+] Equipped creature gets +4/+4 and has first strike and lifelink.

(Add a quest counter as this enters. Sacrifice after 3.)
1, 2 — At the beginning of your end step, if you cast no spells this turn, add a quest counter.
3 — Untap each creature you control. Until your next turn, they gain “{T}: Scry 1.”
Scry 2, then draw two cards. You gain 2 life.