msem-instigator

Creature spells you cast cost {2} less to cast.
Whenever another nontoken creature enters the battlefield under your control, it becomes a colorless Vehicle artifact with crew 1. (Tap any number of creatures you control with total power 1 or greater: That Vehicle becomes an artifact creature until end of turn.)

Indestructible
Whenever Cyrukan attacks, choose one —
• Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
• Create a Weapon token and attach it to target creature you control. (It's an Equipment artifact with equip {2} and “Equipped creature gets +1/+1.”)
At the beginning of each end step, if you control three or more tokens, transform Cyrukan.

When Damaris Alfahir enters the battlefield, for each opponent, put a bribery counter on an artifact or creature that player controls.
At the beginning of your upkeep, gain control of target permanent with a bribery counter on it until end of turn. Untap it. It gains haste until end of turn.

{T}: Add {C}.
{3}{G}: Until end of turn, Damian's Undercity becomes a 2/2 creature. It's still a land. It has lifelink if {W} was spent to activate this ability, gets +0/+3 if {U} was spent, and has deathtouch if {B} was spent.

As Damian, the Boss enters the battlefield, pay up to 5 life. He enters the battlefield with that many additional loyalty counters.
[–X]: You gain X plus 3 life.
[–1]: You draw a card and each opponent discards a card.
[–4]: Destroy up to one target creature. Create a 3/3 green Mole creature token.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Whenever you cast an enchantment spell, draw a card.
II — Tap up to one target nonland permanent and put a stun counter on it. You gain 2 life.
III — Target creature you control gets +1/+1 until end of turn for each enchantment you control.

Whenever you draw a card, choose one —
• Dayang's Artistry deals 1 damage to any target.
• You gain 1 life.
• Scry 1.

Choose two or four —
• Return target nonland permanent to its owner's hand.
• Each player sacrifices a creature.
• Each player sacrifices a noncreature, nonland permanent.
• Conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Augmented — When Dead End Adventurer enters the battlefield, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, destroy target creature you don't control.

Put target permanent on top of its owner's library.

When Dedicated Waypoint enters the battlefield, create a 1/1 white Scout creature token.
{T}: Add {R}, {W}, or {B}.

As long as it's your turn, Defect 37 is a 7/7 Vehicle artifact with crew 2.
[+1]: Creatures and Vehicles you control get +1/+1 until end of turn.
[–1]: Put target permanent into its owner's library, third from the top. If Defect 37 is on the battlefield, return her to her owner's hand.
[–6]: Until end of turn, each noncreature, nonland permanent you control becomes a creature in addition to its other types with base power and toughness each equal to their mana value or base power, whichever is greater.

{T}: Add {C}.
{3}{R}: Until end of turn, Defect's Precinct becomes a 3/3 creature. It's still a land. It has trample if {G} was spent to activate this ability, has vigilance if {W} was spent, and has hexproof if {U} was spent.

Augmented — At the beginning of each end step, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on Defected Explorer.

As Den of Vice enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {U}, {B}, or {R}.

({T}: Add {R}, {W}, or {B}.)
Desolate Dominion enters the battlefield tapped.

As Destroyed Isle enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {W}, {U}, or {B}.

Archive 4 (As this enters the battlefield, shuffle the top four cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
At the beginning of each opponent's upkeep, that player may pay 2 life. If they do, you gain 2 life. Otherwise, you draw a card from the archived library.

You can't lose the game.
Whenever you draw a card, create a tapped Treasure token.
When you lose life, sacrifice that many permanents.

{4}, {T}: Add {W}{U}{B}{R}{G}.

When Div of Bonded Souls enters the battlefield, create a 1/1 colorless Illusion creature token with “This creature is every creature type.”
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Flying
Div of the Endless Thought has all activated and triggered abilities of all other permanents on the battlefield.

Double strike, trample
Enchantment spells you cast cost {1} less to cast.
Whenever you put a lore counter on a Saga you control, Douglass, Star of the Show gets +1/+1 until end of turn.

Flying, menace
When Dreadfire Tyrant enters the battlefield, target opponent reveals their hand. You may put a creature or planeswalker card from it onto the battlefield under your control. That permanent gains haste and “At the beginning of your end step, sacrifice a permanent you control.”
When Dreadfire Tyrant dies, each opponent loses 5 life. You gain life equal to the life lost this way.

When Drop Bear enters the battlefield, return another target permanent that isn't a land an opponent controls or a card in a graveyard to its owner's hand.