msem-instigator

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
When Determined Koi has three or more +1/+1 counters on it, remove them all and transform it.

Menace
Sacrifice a creature: Devouring Flame gets +2/+0 until end of turn.

Disappointment's power and toughness are each equal to the number of differently named lands you control.
Whenever Disappointment enters or deals damage to a player or noncreature permanent, you may return target nonland permanent card from your graveyard to the battlefield. It's a land with “{T}: Add one mana of this card's colors” and loses all other types and abilities.

When Distant Lover enters, create a 1/1 colorless Citizen creature token.

Primal—Reappropriate green. (During your turn, you may cast this spell by exiling two green cards from your hand and/or graveyard instead of playing a land.)
When Dovon's Masterwork enters, return target land card from your graveyard to the battlefield tapped.

{T}: Add {G}.
{B/G}, {T}: Exile target card from a graveyard. If that card is a creature card, put a +1/+1 counter on Dovon, Verdant Experimenter and you gain 1 life.

Defender, flying
Whenever you cast a noncreature spell, Dragon Initiate gets +2/+0 and loses defender until end of turn.

Menace
Whenever Dragon's Twisted Shadow attacks and isn't blocked, it gets +4/+0 until end of turn.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
Dragonmaw Wurm enters with X +1/+1 counters on it.
{1}{G}, {T}: Target creature you control fights another target creature.

Defender
A deck can have any number of cards named Dragonwall Fragment.
At the beginning of your upkeep, if you control twenty or more creatures named Dragonwall Fragment, you win the game.

Defender
When Drunau Egg enters, target player mills two cards.
{3}{U}{U}: Transform Drunau Egg. Activate only as a sorcery and only if an opponent has thirteen or more cards in their graveyard.

Flying
When Dune Wraith enters, distribute two +1/+1 counters among Spirits you control.

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
When Eager Hatchling has three or more +1/+1 counters on it, remove them all and transform it.

{1}{R}: Earnest Labourer gets +2/+0 until end of turn.
{4}{G}: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Defender
Civilized — {T}: Edge of the Empires deals 1 damage to each opponent. Activate only if you control an artifact, a creature, and an enchantment.

Reach
Eerie Cocoons gets +1/+1 as long as you control another Insect.

{3}{G}: Elder Rootwallas gets +4/+2 until end of turn. Activate only once each turn.

Elemental Envelopment enters with X +1/+1 counters on it.
When Elemental Envelopment enters, if you controlled a green legendary creature or planeswalker as you cast it, search your library for any number of Elemental creature cards with total mana value X or less, where X is Elemental Envelopment's power, put them onto the battlefield, then shuffle.

Defender, reach
{T}, Discard a card: Create a 0/2 red and green Scarecrow creature token with defender and reach.
{R}{G}, {T}: Embergourd Scarecrow deals X damage to target player or planeswalker, where X is the number of creatures with defender you control.

Archive 5 (As this enters, shuffle the top five cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Encylopetia's power and toughness are each equal to the number of cards in the archived library.
At the beginning of your upkeep, exile a card from the archived library at random. You may play it this turn.

Whenever a creature attacks you or a planeswalker you control, upgrade Enigmatic Protector. (Give it one of the listed counters it doesn't already have.)
• +1/+1
• Flying
• Prowess

Whenever you make first contact, Entelan Idealist gets +2/+2 until end of turn. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

You may have Enthusiastic Double enter as a copy of any permanent on the battlefield, except it's 4/4, it's a creature in addition to its other types, and it has haste.

You may have Ephemeral Qilin enter as a copy of a multicolored permanent you control.

Essence Manipulator enters with a +1/+1 counter on it.
At the beginning of combat on your turn, you may move a counter from target creature onto another target creature with the same controller.