msem-instigator

{2}: Equipped creature phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)
Equipped creature can't be blocked except by Rogues and is a Rogue in addition to its other types.
Equip {1}

Draw three cards.
Reprise {5}{U}{U} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)

Tap up to two target creatures.
Draw a card.

Trample
Once each turn, if one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead.

When Core Paradigm enters, conjure five cards named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
Up to three times each turn, you may cast a sorcery spell without paying its mana cost.

When Final Symphony enters, exile another target nonland permanent until Final Symphony leaves the battlefield.
When Final Symphony leaves the battlefield, draw a card.

{T}: Add {C}.
{1}, {T}: Add {W}{B}.

Enchant player
At the beginning of each end step, create X 1/1 green Snake creature tokens, where X is the amount of life enchanted player lost this turn.

Return target card from your graveyard to your hand.

{T}: Add {C}.
{3}, {T}: Draw a card. Activate only if a creature died this turn.

{T}: Add {C}.
{1}, {T}, Sacrifice Morphic Verge: Choose two different basic land types. Create a colorless land token that's the chosen types.

Double strike, trample
Enchantment spells you cast cost {1} less to cast.
Whenever you put a lore counter on a Saga you control, Douglass, Star of the Show gets +1/+1 until end of turn.

Target creature gets +3/+3 until end of turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Creatures you control gain deathtouch until end of turn and must be blocked this turn if able.

As an additional cost to cast this spell, torment yourself. (You lose 3 life unless you discard a card or sacrifice a nonland permanent.)
Destroy target creature.

Enchant player
At the beginning of enchanted player's draw step, they draw an additional card.
At the beginning of enchanted player's end step, that player discards all but one card in their hand.

Moonchaser Meadow enters tapped.
{T}: Add {W}.
{1}{W}{W}, {T}: Put a loyalty counter on each planeswalker you control.

[0]: Sacrifice a creature. When you do, Xiong Mao, Survivalist deals damage to any target equal to that creature's power, then put a number of loyalty counters on Xiong Mao equal to that creature's toughness.
[–2]: Return up to two target creature cards from your graveyard to your hand.
[–6]: You get an emblem with “Whenever a creature you control dies, you may draw cards equal to its power, then you may gain life equal to its toughness.”

Menace
When Kai'Zhou enters, you may have all legendary nonland permanents phase out until your next turn.
Whenever Kai'Zhou deals combat damage to a player, they sacrifice a legendary permanent.

({T}: Add {W} or {B}.)
As Blessed Mausoleum enters, you may pay {1}. If you don't, Blessed Mausoleum enters tapped.

As an additional cost to cast this spell, discard a card.
Create three 1/1 red Soldier creature tokens with haste.

Equipped creature gets +0/+2.
As long as equipped creature is a Wizard, it has “{T}: Scry 1.”
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Bigroot Valley enters tapped.
{T}: Add {R} or {G}.
{1}, {T}: Add one mana of any color.

Artifact spells you cast cost {1} less to cast.

Whenever you discard a card, exile that card from your graveyard.
{2}, {T}: Draw a card, then discard a card.
{4}, {T}, Sacrifice Bag of Holding: Return all cards exiled with Bag of Holding to their owner's hand.