msem-instigator

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.

As Enlightened Sigil enters the battlefield, choose a card type.
Spells you cast of the chosen type cost {1} less to cast.

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.

Enchant opponent
At the beginning of enchanted player's upkeep, they choose one that hasn't been chosen yet —
• They discard three cards.
• They sacrifice three nonland permanents.
• You transform Enrapturing Grudge.
If Enrapturing Grudge would be put into a graveyard from anywhere, exile it instead.

Hexproof
At the beginning of your upkeep, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

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.

If an effect would cause an opponent to discard one or more cards while they have fewer than that many cards in hand, they lose life equal to three times the difference instead of discarding the excess cards.

Artifacts you control have “{T}: Add one mana of any color.”
{2}{R}{G}: Create a 3/2 green Crocodile creature token with trample. It gains haste until end of turn.

When Esiara, Skycaster's Infiltrator enters the battlefield, exile target spell with mana value 4 or less.
{1}{U}{U}, Discard two cards: Exile Esiara, then return it to the battlefield under your control.
{2}{U}{U}, {T}, Exile Esiara: Until end of turn, you may play cards you don't own from exile.

Return X target cards with different mana costs from your graveyard to your hand. Exile Eternal Blessings.

{T}: Add {C}. Put a fusion counter on Eternal Reactor.
{2}, {T}: Add {C} for each fusion counter on Eternal Reactor.

{T}, Pay 1 life: Put a charge counter on Eternity Pendant.
If you would lose the game, instead your life total becomes equal to the number of charge counters on Eternity Pendant, then put Eternity Pendant on top of its owner's library.

Embellish {6}{U} (If you cast this spell for {6}{U}, create a 1/1 blue Thopter artifact creature token with flying when it enters the battlefield.)
Whenever you attack, return any number of nonland permanents with different controllers and mana value less than or equal to the number of artifacts you control to their owners' hands.

At the beginning of your upkeep, return a permanent you control to its owner's hand.
You may play an additional land on each of your turns.

Exile target nonland permanent if its mana value is less than or equal to the greatest number of nonland permanents controlled by a single player.

Each player sacrifices a creature.

Whenever you cast a spell, put a lore counter on Exhilarating Prescience.
At the beginning of your upkeep, exile the top X cards of your library, where X is the number of lore counters on Exhilarating Prescience. You may play those cards until your next turn.

Whenever you play a land, you may put a land card from your hand onto the battlefield tapped.

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

Pressure {X}{U}{U} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Look at the top card of your library. You may put that card into your graveyard.
Draw a card. If this spell was cast for its pressure cost, draw X cards instead.

This spell costs {2} less to cast if your life total is less than or equal to half your starting life total.
Destroy all creatures.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Exile one of those piles. Until the end of your next turn, you may play those cards. Shuffle the other pile into your library.

Lifelink, haste
At the beginning of your end step, Fae-Frill Fox deals X damage to target player, where X is the number of times you gained life this turn.

Put target permanent card from a graveyard onto the battlefield under your control.

Codex — Fox of the Orange Orchard; Sludge-Gill Fox; Thundermane Fox; Firemane Fox; Sun-Eyed Fox; Moon-Rune Fox; Leafcrowned Fox; Icecrowned Fox; Fae-Frill Fox. (As this enters, conjure its contents into a shuffled face-up additional library.)
You may spend mana as though it were mana of any color to cast this codex's contents.
Whenever a Fox enters the battlefield under your control, you gain 1 life.