msem-instigator

Trample
When Wasteland Ravagers enters, you may sacrifice a land or exile a land card from your graveyard. If you do, creatures you control get +1/+0 and gain haste until end of turn.

{T}: Add {G}. If there are three or more creature cards in your graveyard, add {G}{G} instead.

Pressure—Reappropriate black. (You may cast this spell by exiling two black cards from your hand and/or graveyard if there are seven or more cards in your graveyard.)
Destroy target creature or planeswalker.

Whenever one or more Rogues you control attack, you may pay 1 life. If you do, draw a card.

Armies you control attack each combat if able.
At the beginning of combat on your turn, recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

When Fretport Warden enters, scry 2.

This spell costs {1} less to cast for each creature that attacked this turn.

Flying
When Syrina, the Dragon Queen enters, gain control of target nonland permanent for as long as you control Syrina, the Dragon Queen.
{2}{U}: Exile Syrina, the Dragon Queen. Return her to the battlefield at the beginning of the next end step.

Choose one —
• Destroy target creature with flying.
• Target creature you control gets +2/+2 until end of turn.

Flying, prowess
When Spellwarden Sphinx enters, tap up to three nonland permanents. Those permanents don't untap during their controllers' next untap step.

Target creature gets +1/+0 and gains first strike until end of turn. Put a deathtouch counter on it.

Rhapsody {4}{R}{W} (Pay {4}{R}{W} to cast this as a 4/4, or as a sorcery to make it become a 4/4.)
Lifelink, haste

Target creature gets +X/+X until end of turn, where X is 3 plus the number of cards named Elemental Power in your graveyard.

When Thailen's Guard dies, you gain 2 life and scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Altar of Creation enters tapped.
{T}: Add {U}.
{T}: Add {B} or {G}. Altar of Creation doesn't untap during your next untap step unless you control an Angel creature.

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.)
Whenever a player discards a card, draw a card from the archived library.

Renown 2 (When this creature deals combat damage to a player, if it isn't renowned, put two +1/+1 counters on it and it becomes renowned.)
When Gilded Champion becomes renowned, you may search your library for an Equipment or Aura card, reveal it, put it into your hand, then shuffle.

Once during each of your turns, when you sacrifice a creature, enchantment, or planeswalker, you may choose one —
• Search your library for a card that shares a card type with the sacrificed permanent, reveal it, put it into your hand, then shuffle.
• Target opponent sacrifices a permanent that shares a card type with the sacrificed permanent.

Enchant player
Whenever enchanted player is attacked, the attacking player creates a tapped and attacking token that's a copy of an attacking creature of their choice, except it's not legendary and has “This permanent can't transform.” That token's controller sacrifices it at end of combat.

I, II — Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Discovery — {4}: You gain 2 life.

Sunrise Ruins enters tapped.
{T}: Add {B}.
You may untap Sunrise Ruins during each other player's untap step. Whenever you do, you lose 1 life.

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Purphoros's Gemback deals 1 damage to target player or planeswalker.
[Lore III] Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

This spell can't be countered.
Burning Winds deals 3 damage to target creature or planeswalker. If that permanent would die this turn, exile it instead.

Ward—Discard a card. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player discards a card.)
You have “Ward—Discard a card.”

When Sasori Nightrunner enters, create a 2/2 colorless Spirit creature token.
Whenever a colorless creature you control dies, each opponent loses 1 life.