msem-instigator

Whenever Elvish Wayfinder enters or attacks, reveal the top four cards of your library. You may put a land card that doesn't share a name with a land you control into your hand. Put the rest on the bottom of your library in any order.

When Ema, the Traveler enters, reveal the top five cards of your library. Put any number of legendary cards revealed this way into your hand and the rest on the bottom of your library in any order.
{2}{B}: Another target legendary permanent gains indestructible until end of turn.

Scry 2. (Then exile this card. You may cast the creature later from exile.)

Enchant artifact or creature
When Embed enters, tap enchanted permanent.
Enchanted permanent doesn't untap during its controller's untap step.

Ember Salvo deals 1 damage to target creature and 1 damage to its controller.

Haste
At the beginning of your upkeep, sacrifice Ember of Ancient Infernos unless you pay {R}.

Prowess, haste
When Embercore Grazer enters, add {R}{R}{R}. Spend this mana only to cast instant and/or sorcery spells.

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.

Haste, prowess
{3}{R}, {T}, Sacrifice Emberheart Arcanist: Return target instant or sorcery card from your graveyard to your hand.

Gestalt (When this or another creature enters under your control, you may merge it with the one in play, keeping counters and attachments. They become the permanent on top plus all abilities from under it.)
When this creature dies, it deals X damage to target player or planeswalker, where X is the number of cards and tokens merged with it.

Colossal 2—{3}{R} (You may cast this for its colossal cost to have it enter with two +1/+1 counters; or pay {3}{R} as a sorcery: Put two +1/+1 counters on it if it has none.)
When Emberhound's colossal ability puts one or more counters on it, target creature can't block this turn.

When Emberling dies, it deals 1 damage to any target.

Enchant land
Enchanted land has “{T}: Exile the top card of your library. If it's a nonland card, you may cast that card this turn.”

Haste
Whenever Emblazoned Qilin attacks, it gains flying until end of turn if it's in a pack. (Two or more creatures you control with equal power are in a pack.)

{T}, Sacrifice a Snake: Choose a counter on target permanent or player. You may put an additional counter of that kind on that permanent or player.

Whenever you cast a noncreature spell, upgrade Embodied Soul. (Give it one of the listed counters it doesn't already have.)
• Flying
• First strike
• Vigilance
• Lifelink
{W}: Until end of turn, if Embodied Soul isn't a creature, it becomes a 0/0 Spirit Avatar enchantment creature with “This creature gets +1/+1 for each different kind of counter on it.”

When Embodiment of Abundance enters, choose one —
• Search your library for up to X basic land cards, where X is the number of lands you control, and put them onto the battlefield tapped. Then shuffle.
• Create a 1/1 green Elf Druid creature token for each creature you control.

Trample
Other Elementals you control get +1/+0 and have trample.

Flying
Other Elementals you control get +0/+1 and have flying.

Haste
Other Elementals you control get +1/+0 and have haste.

Flying, vigilance, lifelink
Embodiment of Law enters with an indestructible counter on it.
{5}{W}{W}, Remove an indestructible counter from Embodiment of Law: For each permanent type, exile up to one permanent of that type.

At the beginning of combat on your turn, choose one —
• Embodiment of Nature gains haste and hexproof until your next turn.
• Embodiment of Nature gains vigilance and indestructible until your next turn.
• Embodiment of Nature gets +2/+2 and gains trample until your next turn.

Creatures and nonbasic lands your opponents control enter tapped.
Morph {3}{W}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When you turn Embodiment of Order face up, it becomes a 4/4 white Angel creature with flying.

Whenever you discard a card this turn, add {B}. Then you may cast that card. (You still pay its costs.)

When Embrace Samang enters, put a charge counter on it for each color among permanents you control.
At the beginning of your first main phase, remove a charge counter from Embrace Samang. If you do, draw a card, then add one mana of any color.