msem-instigator

{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.

Sacrifice a land: You may cast a spell from your hand without paying its mana cost. Activate this ability only once each turn.
Exile five land cards from your graveyard: Draw five cards. Exile the top ten cards of your library.

Flying
Improve {2} ({2}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
At the beginning of combat on your turn, up to two target embattled creatures gain double strike until end of turn. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Flying
Crew 4 (Tap any number of creatures you control with total power 4 or greater: This Vehicle becomes an artifact creature until end of turn.)
Tap two untapped other artifacts you control: Encampment Blimp becomes an artifact creature until end of turn. Scry 1.

{T}: Add {C}.
Concord — {T}: Create a Treasure token. Activate only if there are four or more card types among permanents you control.

Equipped creature gets +1/+1 and has hexproof.
Whenever equipped creature deals combat damage to a player, you may return up to one target instant or sorcery card from your graveyard to your hand.
Equip {3}

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

When Endless Trove enters, 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.

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.

{T}: Add {C}.
{3}, {T}, Sacrifice Enduring Vestige: Search your library for a land card with a basic land type, put it onto the battlefield tapped, then shuffle.

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

Equipped creature gets +1/+0 and has poisonous 1. (Whenever it deals combat damage to a player, that player gets a poison counter.)
Equip {1}

{T}: Add {C}.
{4}, {T}, Sacrifice Eon Campfire: Destroy target artifact or nonbasic land.

{T}: Add {C}.
{T}: Add one mana of any color a Desert you control could produce.
{1}, {T}, Sacrifice Eroded Sanctuary: Draw a card. Activate only if you control four or more Deserts.

Equipped creature gets +0/+2.
As long as equipped creature is a Wizard, it has “{T}: Scry 1.”
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

{T}, Sacrifice Escape Hatch: Return target creature you control to its owner's hand.

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

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

{T}: Put target permanent you own on the bottom of your library.
{1}, {T}: Add one mana of any color. When that mana is spent, target opponent loses 1 life.

When Eternal Inheritance enters 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}

Once each turn, you may activate an additional loyalty ability of a planeswalker you control any time you could cast an instant.

{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.

When Eternity's Eye enters, look at the top seven cards of your library. Put up to three of them into your graveyard and the rest on the bottom of your library in a random order.
{T}: Add one mana of any color.
{2}: Put target card from a graveyard on the bottom of its owner's library.

The first spell you cast each turn costs {1} less to cast.