Bloomburrow Commander

Legendary Creature — Elf Scout

Parley — {T}: Each player reveals the top card of their library. For each nonland card revealed this way, add {G} and you gain 1 life. Then each player draws a card. (Activate only as an instant.)

Selvala, Explorer Returned

Murders at Karlov Manor Commander

Clue

Innocuous Researcher

Creature — Centaur Detective

Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you investigate. Then each player draws a card.
At the beginning of your end step, you may untap all lands you control. If you do, you can't cast spells until your next turn.

The Lost Caverns of Ixalan Commander

Storm Fleet Negotiator

Creature — Siren Pirate

Flying
Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a Map token. Then each player draws a card. (A Map token is an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")

March of the Machine Commander

Treasure

Cutthroat Negotiator

Creature — Orc Pirate

Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a tapped Treasure token. Then each player draws a card.

New Capenna Commander

Phabine, Boss's Confidant

Citizen

Legendary Creature — Cat Advisor

Creature tokens you control have haste.
Parley — At the beginning of combat on your turn, each player reveals the top card of their library. For each land card revealed this way, you create a 1/1 green and white Citizen creature token. Then creatures you control get +1/+1 until end of turn for each nonland card revealed this way. Then each player draws a card.

Conspiracy

Spirit

Sorcery

Parley — Each player reveals the top card of their library. For each nonland card revealed this way, you create a 1/1 white Spirit creature token with flying. Then each player draws a card.

Rousing of Souls

Elephant

Parley — Each player reveals the top card of their library. For each nonland card revealed this way, you create a 3/3 green Elephant creature token. Then each player draws a card.

Selvala's Charge

Creature — Elf Warrior

Parley — When this creature enters, each player reveals the top card of their library. For each nonland card revealed this way, put a +1/+1 counter on this creature. Then each player draws a card.

Selvala's Enforcer

Creature — Elemental

Trample
Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, attacking creatures you control get +1/+1 until end of turn. Then each player draws a card.