msem-instigator

Whenever Almgrove Ambassador blocks or becomes blocked, you may untap target creature and remove it from combat.

When Almgrove Librarian enters, look at the top card of each of your libraries, then for each of those cards, put it on the top or bottom of one of your libraries.

When Almgrove Performer enters, harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — You gain 3 life.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
Enchanted creature loses all abilities except for mana abilities.

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.

Whenever Alrathan Scholar deals combat damage to a player or planeswalker, draw a card.
{2}{U}: Target creature gains flying until end of turn.

Althestran Legionnaire gets +1/+1 for each Aura attached to it.

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.

Sacrifice Amateur Auteur: Destroy target enchantment.

Target player mills five cards.
Draw a card.

Enchant creature
Enchanted creature gets +2/+2.
Whenever enchanted creature attacks, if it's a Scout, scry 2.

Flash (You may cast this spell any time you could cast an instant.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Trample
As long as it's an opponent's turn, Ambushing Alligator is a blue Bird with base power and toughness 1/1 and has flying and hexproof.

Lifelink
At the beginning of each end step, if you gained life this turn, you may pay {W/B}. If you do, create a 1/1 white Spirit creature token with flying.

Whenever one or more creatures you control deal combat damage to a player, put a charge counter on Amulet Coin.
{T}: Add {C} for each charge counter on Amulet Coin.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Audition for red. (Create a 1/1 Construct Actor creature token, a Warrior Role giving 3/2 and trample, or a Wizard Role giving 2/2 and prowess. Roles replace older ones.)
III — Whenever a creature you control deals damage to an opponent this turn, exile the top card of your library. You may play it this turn.
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As an additional cost to cast this spell, discard two cards.
Put the bottom three cards of your library into your hand.

I, II — Return target creature card from your graveyard to your hand.
Discovery — {2}{B}, Sacrifice a creature: Each opponent loses 2 life and you gain 2 life.

This spell costs {2} more to cast for each target beyond the first.
Choose one or more —
• Anax's Endeavor deals 2 damage to any target.
• Destroy target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
• Destroy target artifact. Scry 1.

Equipped creature gets +1/+3.
{0}: Until end of turn, Ancestor's Bulwark becomes a 1/3 Spirit artifact creature with flying. Activate this ability only if it isn't attached.
Equip {3}

Choose one —
• Target creature gains indestructible and lifelink until end of turn.
• Destroy target artifact or enchantment.

Target creature you control gets +3/+3 until end of turn. Then if that creature has power 10 or greater, each other creature you control gets +3/+3 until end of turn.

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