msem-instigator

Legendary creatures you control get +1/+1.

Empress Kogane can't attack or block.
Whenever an opponent casts a spell, you may gain life equal to that spell's mana value.

Flying
Improve {2}
At the beginning of combat on your turn, up to two target embattled creatures gain double strike until end of turn.

When Encrypted Monument is put into your graveyard from anywhere, you may pay {2} and exile it. If you do, draw two cards.

As End of the Empire enters the battlefield, choose a creature card name.
Whenever a creature you don't control with the chosen name dies, create a 4/4 colorless Demon Spirit creature token with menace.

When Endless Trove enters the battlefield, if it's not a token, each opponent may create a token that's a copy of it.
{T}: Add one mana of any color.

Flying
When Endmire Raven dies, each opponent loses 2 life and you gain 2 life.

When Endmire Scourer dies, search your library for a card with mana value 4 or less, reveal it, put it into your hand, then shuffle.

Gain control of target creature with mana value 4 or less until end of turn. Untap that creature. It gains haste until end of turn.

Once each turn, when you activate an ability of a permanent you control that isn't a mana ability, you may exile that permanent. If you do, return that card to the battlefield under its owner's control at the beginning of the next end step.

Exile up to three target cards from a single graveyard. Create a tapped 2/2 colorless Spirit creature token.

As long as it's your turn, planeswalkers you control are X/X creatures with indestructible that are still planeswalkers, where X is the number of loyalty counters on them.
Prevent all damage that would be dealt to planeswalkers you control during your turn.

Return target card from your graveyard to your hand. Distribute X +1/+1 counters among any number of creatures you control, where X is that card's mana value. Exile Entropic Harvest.

Equipped creature gets +1/+0 and has poisonous 1.
Equip {1}

Flying, haste
Whenever Epoch Warden attacks, you may aetherize another target attacking creature you control.

At the beginning of your upkeep, you may put each card in your graveyard on the bottom of your library in a random order, then mill six cards.
During each of your turns, you may play a land and cast a permanent spell from your graveyard.

When Etched Longspear enters the battlefield, attach it to target creature you control.
Equipped creature gets +2/+0.
Equip {3}

When Eternal Inheritance enters the battlefield or at the beginning of your upkeep, if you control no Samurai, create a 1/1 colorless Samurai creature token, then you may attach Eternal Inheritance to it.
Equipped creature gets +1/+1.
Equip {1}

Creatures you control get +1/+1.
When Eternal Purpose enters the battlefield, exile up to two target creature cards with mana value 3 or less from your graveyard. Return them to the battlefield under your control at the beginning of the next end step.

If you would search your library for one or more cards, you may search for an additional card.

Spells you cast from anywhere other than your hand can't be countered.
Whenever an opponent casts a spell with the same name as a card they own in exile or in their graveyard, you may draw a card.

First strike, vigilance, lifelink

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and “Whenever this creature deals combat damage to a player, aetherize it.”

When Expedition Post enters the battlefield, create a 1/1 Scout creature token that's all colors.
Creature tokens you control are every creature type.
{4}, {T}: Create a 1/1 Scout creature token that's all colors.

Explorer's Ascent enters the battlefield tapped.
{T}: Add {W}.
{T}: Target creature you control gets +1/+1 until end of turn.