msem-instigator

Indestructible
Whenever a creature you control becomes untapped, draw a card.

{T}: Add {C}.
{2}, {T}: Add {C} for each Desert you control.

Exile target permanent, then return that card to the battlefield under its owner's control.

[progress 2+]
[progress 5+]
Whenever a creature enters, each opponent loses 1 life.

Put a +1/+1 counter on target creature you control. Untap that creature.

Elegant Strike deals 2 damage to target tapped creature. Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Equipped creature gets +1/+1 and has prowess.
Equip {2}

Counter target spell, activated ability, or triggered ability unless its controller pays {X}. (Mana abilities can't be targeted.)

{T}: Add {C}.
{4}, {T}, Sacrifice Elgaud Fortress: Create a token that's a copy of target artifact you control. Activate only as a sorcery.

Flying
Whenever Elite of Mahara attacks, exile up to two target cards from graveyards. For each permanent card exiled this way, put a +1/+1 counter on Elite of Mahara. For each nonpermanent card exiled this way, each opponent loses 1 life and you gain 1 life.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

Elrayin, the Manaroot enters tapped.
Whenever you tap another land for mana, put a creation counter on Elrayin.
{T}, Remove ten creation counters from Elrayin and sacrifice it: Untap all lands target player controls.

Exile target creature you control, then return that card to the battlefield under your control.

When Elven Guard becomes the target of a spell you control, you may pay {G}. If you do, transform it.

(Transform this if it's not attached to a creature. Pay {3}{G} as a sorcery to unattach it.)
Enchant creature you control
Elven Mount's rider gets +3/+3 and has trample.

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

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

First strike
{1}{R}: Transform Embercut Duelist. Activate only if it's attacking.

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

First strike
At the beginning of your end step, if Emberslash Werewolf didn't attack this turn, transform it.

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.”

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

{T}: Add {W} or {U}. You lose 1 life unless you have less life than an opponent.

Legendary creatures you control get +1/+1.

Target creature you control gets +X/+X until end of turn, where X is the number of +1/+1 counters among creatures you control.