msem-instigator

Equipped creature gets +1/+0.
Whenever equipped creature attacks, you may draw a card then discard a card.
Equip {2}

Reach
Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{3}{G}, {T}: Kareki Stormshooter fights another target creature. If that creature has flying, Kareki Stormshooter deals damage equal to its power to that creature instead.

When Anointed General enters, if you control a legendary creature, Anointed General deals 4 damage to target creature you don't control.

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.

Flash
{4}, {T}, Sacrifice this artifact: It deals 3 damage to target creature or planeswalker.

Flash
Flying
When Lunar Emissary enters, exile another target creature you control until Lunar Emissary leaves the battlefield.

Counter target spell unless its controller has you get three glory counters. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Target creature gets +2/+0 and gains first strike until end of turn. If it's attacking a battle, it gains double strike until end of turn.

Whenever you draw a card, put a dream counter on Stargazing.
Remove seven dream counters from Stargazing and exile it: Shuffle your hand and graveyard into your library, then draw seven cards.

When Ethereal Pact enters, each player shuffles their hand and graveyard into their library, then draws seven cards.
Each player can't cast more than one spell each turn.

Exile target creature or enchantment you control, then return that card to the battlefield under your control.
You may cast On Repeat from your graveyard any time you could cast a sorcery by discarding a land card in addition to paying its other costs.

Once each turn, when Jeffery enters or you create an Aura token, you may create an Aura Role enchantment token named Lead Role attached to target creature you control. It's all colors and has enchant creature you control and “Enchanted creature has base power and toughness 5/5, is all creature types, and has flying, vigilance, trample, lifelink, and prowess.”
Whenever an enchanted creature you control attacks, draw a card.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the next end step.)

Activated abilities of creatures you control cost up to {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Enchant creature
When Strength in Imagining enters, if it enchants a face-down creature, put a +1/+1 counter on that creature.
Enchanted creature has flying and trample.

Audition for white. If you create a Role this way, untap the creature it enchants. (Create a 1/1 Construct Actor creature token, a Scout Role giving 2/3 and vigilance, or a Cleric Role giving 2/2 and lifelink. Roles replace older ones.)

Your opponents can't cast more than one spell each turn.
Identity — Lumi Orthodox gets +1/+2 as long as you control at least two other creatures that share a creature type with it.

Choose one or more —
• Counter target activated ability or triggered ability.
• Prevent all combat damage that would be dealt this turn.

{2}{U}, {T}: Look at the top card of your library. If it's a Scout card or a card with an Adventure, you may reveal it and draw a card.

Idyllic Oasis enters tapped unless you control a Plains.
{T}: Add {G} or {U}.

Defender (This creature can't attack.)
Whenever you cast a spell during an opponent's turn, scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Surveil 2, then you draw a card and you lose 1 life. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
{2}{B}, Exile Corrupted Knowledge from your graveyard: Each opponent loses 2 life and you gain 2 life.

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

Whenever a land you control becomes a creature, put a +1/+1 counter on it.
{2}{G}{U}: Target land you control becomes a 3/3 Elemental creature in addition to its other types until end of turn.

As this artifact enters, choose a creature type.
{T}: Put a muster counter on this artifact.
{T}: You may put a creature card of the chosen type with mana value equal to the number of muster counters on this artifact from your hand onto the battlefield.