msem-instigator

Target creature you control deals damage equal to its power to target player or planeswalker.
Inscribe {4}{R}{G} ({4}{R}{G}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Landfall — Whenever a land you control enters, Landbound Connoisseur gets +1/+1 until end of turn, then you may have another target creature get +X/+X until end of turn, where X is Landbound Connoisseur's power.

{T}: Add {C}.
{2}, {T}: For each color among cards in your graveyard, add one mana of that color.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

At the beginning of your end step, put a -1/-1 counter on each creature you control.
[+1]: Create two 2/2 black Zombie creature tokens.
[0]: Whenever a creature dies this turn, you draw a card and you lose 1 life.
[–4]: Target opponent gets an emblem with “At the beginning of your end step, put a -1/-1 counter on each creature you control.”

When Master Chef enters, create a 0/1 green Plant creature token.
Sacrifice a Plant: You gain 3 life.

When Mausoleum Suffragan enters, create a white and black Aura enchantment token named Pale Shroud attached to target creature. The token has enchant creature and “Enchanted creature gets +1/+1 and has lifelink.”
Whenever an artifact or enchantment you control enters, each opponent loses 1 life.

Deathtouch
Sacrifice a creature: Target player mills two cards.

Put a +1/+1 counter on target creature.
Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying, haste
You may reveal each card you draw as you draw it. Whenever you reveal a creature card with mana value 1 or less this way, create a token that's a copy of it. That copy gains haste until end of turn.

Deception {U}{B} ({U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Oshiruko Conspirator deals combat damage to a player, you may discard a Rogue card. If you do, search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Enchant creature
When Photon Barricade enters, draw a card.
Enchanted creature gets +1/+1 and can't attack.

Return target creature to its owner's hand.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, draw a card.

Promenade Banner enters tapped.
{1}, {T}: Creatures you control get +1/+1 until end of turn.

Choose one —
• Target creature gets +4/+2 until end of turn.
• Pyromantic Expertise deals 4 damage to target creature or planeswalker.

Haste
Whenever Quinn or another creature you control enters, tap all creatures your opponents control.

Each Merfolk and Wizard you control has “Whenever this creature attacks, abound.” (To abound, you may cast a spell that costs less than that creature from your hand without paying its mana cost.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
Whenever a card leaves your graveyard, you gain 1 life.
I, II — Return target land card from your graveyard to the battlefield.
III — Return any number of creature and/or land cards from your graveyard to your hand. Exile Restoration.

(Transforms from Ruined Theater.)
{T}: Add one mana of any color.

Hexproof
Each creature you control with a card inscribed onto it has hexproof.

{T}: Add {C}.
{1}, {T}: Transform Ruined Theater.

When Scion of Pestilence enters, create a black enchantment token named Blight with “At the beginning of your upkeep, you lose 1 life.”

Whenever you sacrifice a permanent, you may pay {1}. If you do, you draw a card and you gain 1 life.

Flash
When Seabreen Nullmage enters, counter target activated or triggered ability. (A triggered ability uses the words “when,” “whenever,” or “at”. Mana abilities can't be targeted.)