msem-instigator

Flash
Flying

Spells your opponents cast that target Onigori, Ema's Shield cost {2} more to cast.
Whenever Onigori deals combat damage to a player, that player can't untap more than two permanents during their next untap step.

Whenever Orria Mirrorpelt becomes the target of a spell, exile that spell. If Orria Mirrorpelt was its only target, copy it for each other creature target player controls. Each copy targets a different one of those creatures.

Primal {1}{G}{G} (During your turn, you may cast this spell for {1}{G}{G} instead of playing a land.)
When Orria's Ward enters the battlefield, if you played a land this turn, draw a card. Otherwise, put two +1/+1 counters on it.

Any number of target players each draw seven cards, then discard seven cards.

Flash
Flying
When P05 Suppressor enters the battlefield, create a Function token with “Tap target creature. Put a stun counter on it.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Put target spell or nonland permanent on top of its owner's library.

When Phyrexian Arcforger enters the battlefield, create a 1/1 colorless Phyrexian artifact creature token for each artifact you control.

Create a token that's a copy of target permanent you control, except it isn't legendary. Then put Picture Perfect on the bottom of its owner's library if you cast it from exile.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

Conjure a card named Ancestral Recall, a card named Time Walk, and a card named Timetwister into your main library, then shuffle.
Draw three cards. Exile Power Control.

Enchant creature
{U}: Tap enchanted creature.
{1}{U}: Untap enchanted creature and gain control of it until end of turn.

When Queue Bouncer enters the battlefield, return target creature to its owner's hand. If you control another Actor, instead put that creature on top of its owner's library.

Choose one or both —
• Each player shuffles their hand and graveyard into their library, then draws seven cards.
• Each player may put a permanent card from their hand onto the battlefield.
Exile Reality Rewoven.

Rediscover an artifact card, then do the same for creature, enchantment, instant, land, planeswalker, and sorcery. (Each time, look at the top card of your library. You may reveal it and put it into your hand if it's of that type. Otherwise, put it back or into your graveyard.)

(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.

Concord — When Riptide Mystic enters the battlefield, if there are four or more card types among permanents you control, you may return target nonland permanent to its owner's hand.

Flying
When Sage of Dilemmas enters the battlefield, return up to one target enchantment to its owner's hand.

When Sandborn Mage enters the battlefield, you may return target instant or sorcery card from your graveyard to your hand.
Mirage {2}{U}{U} (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

Draw three cards, then manifest a card from your hand. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Flying
When Scion of Torrents enters the battlefield, you may return target nonland permanent to its owner's hand.
Whenever an Island enters the battlefield under your control, you may aetherize Scion of Torrents. (To aetherize, create a token that's a copy of it, then exile that token.)

{U}: Sea Strider gets +1/-1 until end of turn.
{U}: Sea Strider gets -1/+1 until end of turn.

Reveal the top five cards of your library. Put one of those cards into your hand. Target opponent chooses two of those cards. Exile the chosen cards, then put the rest into your hand.

Untap all permanents you control during each other player's untap step.

Flash
Menagerie — When Seven Seas Scourge enters the battlefield, if there are five or more creature types among creatures you control, counter target spell with mana value 4 or less.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)