msem-instigator

Flash
Enchant player
When Curse of Tempests enters, it deals 3 damage to target creature or planeswalker enchanted player controls.
Whenever enchanted player is attacked, you may draw a card. If you do, discard a card.

Knight creatures you control have vigilance.
{2}{G}{W}: Put a +1/+1 counter on each creature you control.

Prowess

Legendary creatures you control get +1/+1.

Choose land or nonland. Reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and the rest on the bottom of your library in a random order.

Reach
When Archived Intelligence enters, surveil 2. Then if you control a token, draw a card.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.
Menagerie — If there are five or more creature types among creatures you control, scry 3.

Vigilance
Whenever Underpass Sentinel enters or attacks, you may put a +1/+1 counter on another target creature you control without one.
Sacrifice Underpass Sentinel: Embattled creatures you control gain hexproof and indestructible until end of turn. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

When Polgek Artisan enters, create an X/X colorless Juggernaut artifact creature token, where X is the number of artifacts and enchantments you control.

When Lysene enters, you may search your library for a card with foretell, reveal it, put it into your hand, then shuffle. The next card you foretell this turn costs {0} to foretell.
Whenever you foretell a card or cast a foretold spell, Pirates and Rogues you control get +1/+0 until end of turn. Up to one target Pirate or Rogue you control can't be blocked this turn.

When Blossoming Expanse enters, you may put a basic land card from your hand onto the battlefield tapped.
{1}, {T}: Add one mana of any color.

When The Struggle for Death enters, choose target creature you don't control. Any number of creatures you control fight that creature.
Whenever a creature dies, look at the top card of your library. You may put it into your graveyard.

Sprout Hermit can't attack unless you control a creature with power 4 or greater.
Attain {3}{G} ({3}{G}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Flying, trample
Whenever Hao'Tai, the Ancient One deals combat damage to a player, exile the top four cards of that player's library. Until end of turn, you may cast instant, sorcery, and creature cards from among those exiled cards, and you may spend mana as though it were mana of any color to cast them.

When Inspired Blade enters, if you control another Warrior, draw a card.

Destroy target artifact.
Cycling {1}{R} ({1}{R}, Discard this card: Draw a card.)

Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)
When Tomb Steward enters, search your library for a card and put it into your graveyard. Then shuffle.

Whenever Duela Alchemist becomes tapped, catalyze. (The next spell you cast this turn costs {1} less to cast.)
{1}{U}, {T}: Untap another target artifact or creature.

Flash (You may cast this spell any time you could cast an instant.)
When Stampede Instigator enters, target creature gets +2/+3 until end of turn.

Flying, deathtouch
Revive {3}{B} ({3}{B}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

Flying
Adorned — Steamquiver Condor has ward {2} as long as it's equipped and/or enchanted.

Flying, double strike

Menace
As long as there are two or more cryptic cards in your graveyard, Fierce Raider has double strike. (Artifacts, enchantments, and modal spells are cryptic.)
Cryptic spells you cast can't be countered.

At the beginning of your upkeep, you may discard a land card. When you do, create a 2/2 green Wolf creature token.

Destroy target creature. You gain 1 life for each card in its controller's graveyard.