msem-instigator

Flash
When this creature enters, look at the top six cards of your library. You may reveal an instant card or card with flash from among them and put it into your hand. Put the rest on the bottom in a random order.

You may discard a card. If you do, draw two cards.
Type leitmotif (If you cast this spell from your hand, exile it as it resolves. When you cast your next spell that shares a type with this card, you may cast this from exile without paying its mana cost.)

Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Hapless Chronomancer dies, if it had no time counters on it, return target instant or sorcery card from your graveyard to your hand.

When Adept of Rations enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
Tokens you control have “{2}, {T}, Sacrifice this token: You gain 3 life.”

Creatures you control get +2/+0 and have deathtouch as long as ten or more cards are in your graveyard.

When Hunting Ground enters, create four 1/1 green Saproling creature tokens.
Whenever a creature you control dies, creatures you control get +1/+1 until end of turn.

Flying, haste
Whenever Shimmering Dragon attacks, for each creature you control, create a tapped and attacking token that's a copy of that creature. Exile the tokens at the beginning of the end step.

(Transform this if it's not attached to a creature. Pay {2}{W} as a sorcery to unattach it.)
Enchant creature you control
Slopestrider's Chariot's rider gets +1/+1 and has double strike.

[+1]: Exile up to one other target nonland permanent. As long as it remains exiled, its owner may pay {1} as a sorcery to put it onto the battlefield.
[–3]: Choose 0, 1, or 2. Each player sacrifices that many creatures.
[–4]: You get an emblem with “If a nonland, nontoken permanent would enter and it wasn't cast, you may exile it instead.”

As long as Vinehorn Stag has a +1/+1 counter on it, it can't be blocked by more than one creature.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Lord of Swarms enters or dies, target creature gets -2/-2 until end of turn.

Reverberate {2} (When you cast this spell, copy it if you paid its reverberate cost.)
Draw a card.

Menace
Whenever Weoran enters or attacks, you may exile a creature card from your graveyard. If you do, draw a card. If that creature card had toughness 4 or greater, you gain 4 life.

If you would put one or more counters on a creature you control or on yourself, put that many plus one of each of those kinds of counters on that creature or player instead.
{2}{G}{U}, Sacrifice Triton's Invocation: Draw cards equal to the greatest number of counters among creatures you control and yourself.

{T}: Add {C}.
{3}{W}: Until end of turn, Llereaux's Lair becomes a 1/2 creature. It's still a land. It can't be blocked this turn if {U} was spent to activate this ability, has indestructible if {B} was spent, and gets +2/+1 if {R} was spent.

Whenever a creature you control dies, you may search your library for a creature card with lesser mana value, put it onto the battlefield tapped, then shuffle. Do this only once during each of your turns.

Abandoned Laboratory enters tapped if you control another nonbasic land.
{T}: Add {W} or {B}.

When Crackling Palm Ascetic enters, target creature gains double strike until end of turn.

You may look at the top card of your library any time.
Once each turn, you may cast an instant or sorcery spell from the top of your library.
{4}{R}: Transform Paranormal Convergence. Activate only as a sorcery and only if the total number of instant and/or sorcery cards you own in exile and in your graveyard is seven or more.

Vigilance
Permanent spells you cast cost {1} less to cast for each 1 damage Tireless Explorer has dealt to players this turn.

Menagerie — When Supply Hauler enters, if there are five or more creature types among creatures you control, you may search your library for an artifact card, reveal it, put it into your hand, then shuffle.

Draw two cards.
Crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)

Whenever a creature you control dies, Twilight Blade deals 1 damage to each opponent and you gain 1 life.

Whenever a Plains you control enters, create a 1/1 white Soldier creature token.
Whenever you attack, you may search your library for a Plains card, reveal it, put it into your hand, then shuffle.