msem-instigator

When Seikatsu Warleader enters, if it's not a token, create a token that's a copy of target creature token you control.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{2}{W}: Target creature gains vigilance until end of turn.

When Soul Jar enters, exile target creature and each other creature with the same name as that creature until Soul Jar leaves the battlefield.

Target creature gets +1/+1 for each creature you control and gains flying and vigilance until end of turn.

Enchant creature
Spirited (When this enters, you may activate one of its activated abilities without paying its cost.)
{1}: Enchanted creature can't attack or block this turn.

Flash
Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{T}: Target creature gets +0/+4 until end of turn.

Gain control of target noncreature, nonland permanent with mana value X.

Whenever you cast a spell, draw a card if that spell has the same name as a card in your graveyard.

When you cast Aspect of Shifting Storms, create a token that's a copy of it.
You may have Aspect of Shifting Storms enter as a copy of any creature on the battlefield, except if it's a token it has no mana cost.

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.

Exile any number of target creatures you control, then return those creatures to the battlefield under their owner's control.

Each player returns each instant and sorcery card from their graveyard to their hand. Exile Ebb and Flow.

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of into that player's graveyard.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{U}, {T}: You may tap or untap target Human.

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.

Mill four cards, then return a noncreature card from your graveyard to your hand.

When Journey through Odaya enters, draw a card, then choose a creature card name.
Creatures you control with the chosen name can't be blocked.

You don't lose the game for drawing from an empty library.
As long as you have seven or fewer cards in each of your libraries, you may cast spells without paying their mana costs.

Flash
When Odaya Magistrate enters, you may counter target noncreature spell.

Deception {2}{U} ({2}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever a creature you control deals combat damage to an opponent, you may draw a card.

Flash
When Rippling Water Arcanist enters, copy target instant or sorcery spell you control, then return it to its owner's hand. You may choose new targets for the copy.

Draw a card.
Whenever Seek Guidance is put into your graveyard from your hand or library, scry 2. (This doesn't include being cast.)

Shadow Courier can't be blocked.

You may look at the top card of your library any time.
{T}: Target player mills a card.

Target opponent exiles cards from the top of their library until X land cards are exiled, where X is the number of land cards in your graveyard.