msem-instigator

Adjudicate, then each player returns a creature they control that isn't enchanted to its owner's hand. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)

Exchange control of two target creatures. If an opponent gained control of a Monk you controlled this way, return that creature to its owner's hand.

Flash (You may cast this spell any time you could cast an instant.)
When Replicator Mage enters, you may create a token that's a copy of target creature that's attacking you. Exile that token at end of combat.

Until end of turn, target creature loses all abilities and has base power and toughness 1/1. Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Wanderlust — When you cast this spell, you may copy it if you control four or more differently named lands.
Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.

Choose target instant spell, sorcery spell, activated ability, or triggered ability. Create a Function token with its effects. Then you may pay {1}{U}. If you do, counter that spell or ability. (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell. A spell's effects includes added functions.)

Return target nonland permanent to its owner's hand. Then you may pay {U}{U}. If you do, copy Resonating Force and you may choose new targets for the copy.

Enchant permanent
Whenever a counter is removed from enchanted permanent, you may put a counter of that type on another target permanent.

You may cast this spell as though it had flash if you pay an additional {2} to cast it.
You may have Resourceful Impersonator enter as a copy of any creature on the battlefield.

Target nonland permanent phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
Draw a card.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
{1}{U}: Tap enchanted creature.

{U}, Sacrifice Results Uncertain: Scry 2.
{U}, Sacrifice Results Uncertain: Draw a card.

Flying
When Reticent Possessor enters, you may attach target Aura you control to target permanent or player it could enchant.

Embellish {5}{U} (If you cast this spell for {5}{U}, create a 1/1 blue Thopter artifact creature token with flying when it enters.)
Retinue Golem gets +1/+1 as long as you control another artifact.

Counter target spell.
You may draw four cards. If you do, skip your next turn.

Choose one —
• Return target nonland permanent to its owner's hand.
• Put the bottom two cards of your library into your hand.

Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, put the top card of your main library on the bottom of the archived library.
{U}: Exchange a card from the archived library with a card from your hand.

Counter target spell. Its controller draws a card.

Shuffle your graveyard into your library, then draw two cards.

Choose target spell. If it's an instant, a sorcery, or you cast this spell from exile, copy it. You may choose new targets for the copy.
Prophecy {2}{U}{U} (Once each turn, you may exile a card with prophecy as you reveal it. When you do, you may cast it for its prophecy cost as long as it's exiled.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
Your opponents play with their hands revealed.
I, II — Return target nonland permanent an opponent controls to its owner's hand.
III — Gain control of target nonland permanent.

When Rhudai Overseer enters, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Hexproof
Each creature you control with a card inscribed onto it has hexproof.

As Rhythm of Nizev enters, choose Fahrib or Rahstahde.
• Fahrib — Whenever you cast a spell from anywhere other than your hand, draw a card.
• Rahstahde — Creatures you control have prowess. (Multiple instances of prowess stack.)