msem-instigator

Partner with Kasoha, Keeper of Truths (When this creature enters, target player may put Kasoha into their hand from their library, then shuffle.)
Whenever Shizura, Keeper of Traditions or another legendary creature dies, target player draws two cards and loses 2 life.

Whenever Orphan Prodigy is dealt damage, it deals that much damage to target player.
Attain {4}{R} ({4}{R}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

When Capac's Envoy enters, draw a card.
If one or more players would draw one or more cards except the first draw of a draw step, instead each player may draw up to the greatest number of cards that would have been drawn this way.

Draw three cards, then discard a card.

When Wayfaring Swindler enters, destroy all permanents attached to target creature.

When Jara Disciplinarian enters, each player sacrifices a creature.

Enchant creature
Enchanted creature can't attack or block.
When enchanted creature leaves the battlefield, you gain 4 life.

{T}, Sacrifice an artifact or creature: Each opponent loses 1 life and you gain 1 life.

As an additional cost to cast this spell, tap an untapped artifact you control.
Target player discards two cards.

First strike
Whenever you discard a card, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

{R}{W}, {T}: Femourri Archer deals damage equal to its power to any target. You gain that much life.

When Telarine Riftcrosser enters, create a 1/1 Scout creature token that's all colors.
Creature tokens you control have menace.

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Draw two cards. [Then discard two cards.]

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
When Cuff Down enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Kicker—Sacrifice a creature. (You may sacrifice a creature in addition to any other costs as you cast this spell.)
You draw two cards and you lose 2 life. If this spell was kicked, you draw four cards and you lose 4 life instead.

You may have Surging Wurm assign its combat damage as though it weren't blocked.
Surging Wurm gets +2/+2 as long as seven or more cards are in your graveyard.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Exile one of those piles. Until the end of your next turn, you may play those cards. Shuffle the other pile into your library.

Lieshi Shrine enters tapped.
{T}: Add {W} or {B}.
{W/B}, {T}, Sacrifice Lieshi Shrine: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

Seaside Citadel enters tapped.
{T}: Add {G}, {W}, or {U}.

As an additional cost to cast this spell, sacrifice X lands and/or creatures.
This spell can't be countered.
Create X tapped colorless enchantment land tokens named Paradise with hexproof and “{T}: Add one mana of any color.”

Equipped creature gets +2/+0 and has “{T}, Unattach Javelin: It deals 2 damage to target creature.”
Equip {2}

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
When Ushi Yun enters, create an Idol token.
As long as you're in a renaissance, artifacts you control have “{T}: Draw a card.”

Enchant creature
Enchanted creature gains +X/+X, where X is your life total.
When enchanted creature dies, shuffle Life's Will into its owner's library.

{U}, Discard a card: Counter target spell unless its controller pays {1}.
Whenever a spell or ability you control counters a spell or ability, you get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Target creature gets +1/+2 and gains flying until end of turn.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)