Keeper of Keys

The Monarch

When this creature enters, you become the monarch.
At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.

Messenger Jays

Flying
Council's dilemma — When this creature enters, starting with you, each player votes for feather or quill. Put a +1/+1 counter on this creature for each feather vote and draw a card for each quill vote. For each card drawn this way, discard a card.

Skittering Crustacean

{6}{U}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)
As long as this creature is monstrous, it has hexproof. (It can't be the target of spells or abilities your opponents control.)

Spire Phantasm

Reveal this card as you draft it. The next time a player drafts a card from this booster pack, guess that card's name. Then that player reveals the drafted card.
Flying
When this creature enters, if you guessed correctly for a card named Spire Phantasm, draw a card.

Stunt Double

Flash
You may have this creature enter as a copy of any creature on the battlefield.

Archdemon of Paliano

Draft this card face up.
As long as this card is face up during the draft, you can't look at booster packs and must draft cards at random. After you draft three cards this way, turn this card face down. (You may look at cards as you draft them.)
Flying

Capital Punishment

Council's dilemma — Starting with you, each player votes for death or taxes. Each opponent sacrifices a creature of their choice for each death vote and discards a card for each taxes vote.

Custodi Lich

When this creature enters, you become the monarch.
Whenever you become the monarch, target player sacrifices a creature of their choice.

Deadly Designs

{2}: Put a plot counter on this enchantment. Any player may activate this ability.
When there are five or more plot counters on this enchantment, sacrifice it. If you do, destroy up to two target creatures.

Garrulous Sycophant

At the beginning of your end step, if you're the monarch, each opponent loses 1 life and you gain 1 life.

Marchesa's Decree

When this enchantment enters, you become the monarch.
Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life.

Regicide

Reveal this card as you draft it. The player to your right chooses a color, you choose another color, then the player to your left chooses a third color.
Destroy target creature that's one or more of the colors chosen as you drafted cards named Regicide.

Sinuous Vermin

{3}{B}{B}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
As long as this creature is monstrous, it has menace. (It can't be blocked except by two or more creatures.)

Smuggler Captain

Draft this card face up.
As you draft a card, you may reveal it, note its name, then turn this card face down.
When this creature enters, you may search your library for a card with a name you noted for cards named Smuggler Captain, reveal it, put it into your hand, then shuffle.

Thorn of the Black Rose

Deathtouch
When this creature enters, you become the monarch.

Besmirch

Until end of turn, gain control of target creature and it gains haste. Untap and goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Conspiracy: Take the Crown