Put four -1/-1 counters on target creature.

Flash
When this enchantment enters, target creature gets -4/-4 until end of turn.
Whenever one or more creature cards leave your graveyard, each opponent loses 1 life and you gain 1 life.

As an additional cost to cast this spell, sacrifice a creature or enchantment or pay .
Betrayer's Bargain deals 5 damage to target creature. If that creature would die this turn, exile it instead.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

When this creature enters, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
Whenever you sacrifice a Food, you may search your library for a basic land card and put it onto the battlefield tapped. If you search your library this way, put this creature on the bottom of its owner's library, then shuffle.

Equipped creature gets +1/+1.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

This land enters tapped.
: Add .
: This land becomes a 2/1 red Warrior creature with first strike until end of turn. It's still a land. (It deals combat damage before creatures without first strike.)

When Azog enters, destroy up to one other target creature. Its controller amasses Goblins X, where X is that creature's power. If you controlled that creature, draw a card. (To amass Goblins X, that player puts X +1/+1 counters on an Army they control. It's also a Goblin. If they don't control an Army, they create a 0/0 black Goblin Army creature token first.)

Vigilance
Whenever you draw your second card each turn, put a +1/+1 counter on this creature.
When this creature dies, create a Clue token. (It's an artifact with ", Sacrifice this token: Draw a card.")

Flying
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

This artifact enters with two +1/+1 counters on it.
: Move a +1/+1 counter from this artifact onto target creature you control. Activate only as a sorcery.
Whenever a modified creature you control leaves the battlefield, put a +1/+1 counter on this artifact. (Equipment, Auras you control, and counters are modifications.)

Lifelink
This creature enters with two -1/-1 counters on it.
, Remove two counters from this creature: Return target creature card with mana value 3 or less from your graveyard to the battlefield. Activate only as a sorcery.

Target nonland permanent's owner puts it on their choice of the top or bottom of their library.
Cycling (, Discard this card: Draw a card.)

Tap one or two target untapped creatures you control. They each deal damage equal to their power to target creature an opponent controls.

This land enters tapped.
When this land enters, you gain 1 life.
: Add or .

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Bituminous Blast deals 4 damage to target creature.

Choose one or both —
• Double target creature's power and toughness until end of turn.
• Target creature you control fights target creature an opponent controls.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Each opponent sacrifices a creature of their choice.
II — Creatures you control gain deathtouch until end of turn.
III — Each opponent loses 1 life for each creature card in their graveyard.