Flying

Prince of Chaos — When Be'lakor, the Dark Master enters, you draw X cards and you lose X life, where X is the number of Demons you control.

Lord of Torment — Whenever another Demon you control enters, it deals damage equal to its power to any target.

You may look at the top card of your library any time.

You may cast creature spells from the top of your library.

, , Tap two untapped creatures you control: Reveal a card from your hand or the top card of your library. If you reveal a creature card this way, put it onto the battlefield. Activate only during your turn.

Haste

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

: Henchfiend of Ukor gets +1/+0 until end of turn.

Lands don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player untaps a land they control.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When Invasion of Ikoria enters, search your library and/or graveyard for a non-Human creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle.

Double strike

Equipped Warriors you control have double strike.

When Kor Cartographer enters, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Whenever Kor Celebrant or another creature you control enters, you gain 1 life.

All damage that would be dealt this turn to target creature you control by a source of your choice is dealt to another target creature instead.

Rally — Whenever Kor Entanglers or another Ally you control enters, tap target creature an opponent controls.

Equipped creature gets +1/+1 and has vigilance.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Kor Hookmaster enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

When Kor Outfitter enters, you may attach target Equipment you control to target creature you control.

Kor Scythemaster has first strike as long as it's attacking.

Flying

When Kor Skyfisher enters, return a permanent you control to its owner's hand.

Korlash, Heir to Blackblade's power and toughness are each equal to the number of Swamps you control.

: Regenerate Korlash.

Grandeur — Discard another card named Korlash, Heir to Blackblade: Search your library for up to two Swamp cards, put them onto the battlefield tapped, then shuffle.

All Swamps are 1/1 black creatures that are still lands.

: Target creature gets +1/+1 and gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

, Sacrifice a nontoken creature: Create X 1/1 green Saproling creature tokens, where X is the sacrificed creature's toughness.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

III — Exile the top three cards of target opponent's library. You may play those cards this turn.

This spell costs less to cast for each card type among permanents you've sacrificed this turn.

Flying, trample, haste

Whenever Korvold deals combat damage to a player, put X +1/+1 counters on Korvold and draw X cards, where X is the number of permanent types among cards in your graveyard.

: Loch Korrigan gets +1/+1 until end of turn.

As long as Martyrs of Korlis is untapped, all damage that would be dealt to you by artifacts is dealt to Martyrs of Korlis instead.

: The next 1 damage that would be dealt to Nomads en-Kor this turn is dealt to target creature you control instead.

: The next 1 damage that would be dealt to Shaman en-Kor this turn is dealt to target creature you control instead.

: The next time a source of your choice would deal damage to target creature this turn, that damage is dealt to Shaman en-Kor instead.

Menace

Command Protocols — Other artifact creatures you control get +1/+0 and have menace.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

First strike

, Exile Survivor of Korlis from your graveyard: Scry 2.

Flying, trample

Whenever Wasitora, Nekoru Queen deals combat damage to a player, that player sacrifices a creature of their choice. If the player can't, you create a 3/3 black, red, and green Cat Dragon creature token with flying.

Reach

For each non-Human creature you control, you may have that creature assign its combat damage as though it weren't blocked.