msem-instigator

Exile all creatures, then for each creature exiled this way, you may return it to the battlefield under its owner's control. For each creature you didn't return to the battlefield this way, its owner may search their library for a basic land card and put it onto the battlefield tapped. Each player that does shuffles.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
When Vedalken Reshaper enters, return target instant or sorcery card from your graveyard to your hand.

If you have less life than an opponent, you gain 2 life. If you control fewer creatures than an opponent, create a 1/1 colorless Construct Actor creature token.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Flash
When Cocky Bladesinger enters, it gains first strike, lifelink, and haste until end of turn.

Search your library for a land card, put it onto the battlefield tapped, then shuffle.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, untap that land.

Creatures you control gain lifelink until end of turn. If {W} was spent to cast Gorran Charge, creatures you control get +2/+2 until end of turn.

Enchant creature
Enchanted creature can't be blocked.
Whenever enchanted creature deals combat damage to a player, you may aetherize it. (To aetherize, create a token that's a copy of it, then exile that token.)

Counter target spell.
{1}{U}, Exile Refute from your graveyard: Draw a card.

This creature's power and toughness are each equal to the number of creatures you control.
Arise {3}{W} ({3}{W}, Exile this from your graveyard as a sorcery: Create a black token copy of it that's also a Zombie and can't block.)

When Masha's Lightbound becomes tapped for the first time each turn, untap Masha's Lightbound and each other creature you control.
{W}, {T}: Exile target card from a graveyard.

Creatures can't attack you unless their controller pays {3} for each of those creatures.

Untap all basic lands you control.
Draw a card.

When Sensational Festivities enters or at the beginning of your upkeep, you may draw a card. If you do, each opponent may draw a card, then discard a card.

When Chiheisen, Terrace of Serenity enters, draw a card, then choose a creature card name.
Spells you cast with the chosen name cost {2} less to cast.

Enchant creature you control
Whenever enchanted creature attacks, mill three cards.
When enchanted creature leaves the battlefield, create an X/X green Spirit creature token, where X is equal to the number of card types among cards in your graveyard.

Enchant creature
You control enchanted creature.
Enchanted creature gets +1/+1 and has slipstream. (This creature can't be blocked as long as only creatures with slipstream are attacking.)

Art of war — At the beginning of your end step, if Raiun Bay Junk dealt damage to an opponent this turn, put a +1/+1 counter on it.
Tap an untapped creature you control: Raiun Bay Junk becomes an artifact creature until end of turn.

You may return a land you control to its owner's hand rather than pay this spell's mana cost.
Galvan Coal Line enters tapped.
{T}: Add {R}.

Create a 1/1 white Soldier creature token. It gets +1/+1 and gains first strike until end of turn.

Menace, prowess

Whenever one or more Rogues you control attack, you may pay 1 life. If you do, draw a card.

At the beginning of combat on your turn, target creature gets +1/+1 and gains haste until end of turn.

Tithe (When this creature enters, you may tap three other artifacts and/or creatures you control.)
Menace, lifelink
When Determined Evangelist's tithe is paid, put two +1/+1 counters on it.

{T}: Add {C}.
{3}, {T}, Sacrifice City Gate: Put two +1/+1 counters on target creature you control that attacked this turn.