msem-instigator

If you've scried this turn, this spell costs {2} less to cast and can't be countered.
Draw two cards.

Whenever you cast an instant or sorcery spell, create a Treasure Clue token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color” and “{2}, Sacrifice this artifact: Draw a card.)

Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)
Whenever you cast a spell that doesn't share a color with Cloudstep Capuchin, Cloudstep Capuchin gains flying and hexproof until end of turn.

Equipped creature gets +1/+1 and has vigilance and lifelink.
Equip {3}

Flying, haste
Angel spells you cast cost {1} less to cast.
Other Angels you control get +1/+1 and have haste.

{T}: Add {C}.
{2}, {T}, Sacrifice Failing Port: Draw a card.

{T}: Add {C}.
{1}, {T}, Sacrifice a creature: Create a 1/1 colorless Spirit creature token.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. You gain 3 life.

When Persecution Official enters, choose a creature card name.
Cards with the chosen name can't be cast.

Whenever an opponent discards a card, exile it. You may cast that card as long for as it remains exiled, and you may spend black mana as though it were mana of any color to cast that spell.

Target creature gains indestructible until end of turn. Untap it.
Draw a card.

Menace
Servitor Vanguard gets +X/+X, where X is the number of other artifacts you control.

When Ghoulcaller's Graf enters, mill two cards.
{T}: Add {C}.
{5}, {T}, Sacrifice Ghoulcaller's Graf: Return up to two target creature cards from your graveyard to your hand.

At the beginning of your upkeep, each player conjures a card named Data-Point into their hand. (It's a sorcery that costs {2} with “Draw a card.”)

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.)

Menace
When Bogborn Exorcist enters, you may discard a card. When you do, exile target instant or sorcery card with mana value 3 or less from an opponent's graveyard. Copy that card. You may cast the copy without paying its mana cost.

When Deadly Harpoon enters, destroy up to one target creature or planeswalker.
Equipped creature gets +2/+0.
Equip {2}

Target creature gets +2/+2 until end of turn. Untap it.

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Hundred Years of Solitude enters, exile another target nonland permanent until Hundred Years of Solitude leaves the battlefield.

{T}: Draw a card. Artisan's Fountain doesn't untap during its controller's next untap step.

Exile target nonland permanent.

Whenever another creature you control dies, put a +1/+1 counter on Ruthless Weichafe and you lose 1 life.
Whenever Ruthless Weichafe attacks, if its power is 4 or greater, it gains lifelink until end of turn.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

When Hashiro's Vanguard enters, each player sacrifices a nontoken creature.

When Imperial Diplomats enters, if it's not a token, create a token that's a copy of it, except it has no mana cost.
{T}, Tap an untapped creature you control: Draw a card, then discard a card.