Korlash, Heir to Blackblade

a Swamp enters the battlefield — 17 cards in Korlash's colors can cause this (Korlash is one).

When a Swamp enters thanks to Korlash, Heir to Blackblade:

1. Veilborn Ghoul — returns itself from the graveyard
2. Staff of the Death Magus — gains you 1 life
3. Dread Presence — triggers

a Zombie enters the battlefield — 509 cards in Korlash's colors can cause this (Korlash is one).

When Korlash, Heir to Blackblade enters:

1. Noxious Ghoul — shrinks a creature by -1/-1
2. Champion of the Perished — puts a +1/+1 counter on itself

a Warrior deals combat damage — 170 cards in Korlash's colors can cause this (Korlash is one).

1. Raiders' Spoils — When Korlash, Heir to Blackblade deals combat damage, Raiders' Spoils makes you lose life

a Warrior creature enters the battlefield — 187 cards in Korlash's colors can cause this (Korlash is one).

1. Obsidian Battle-Axe — When Korlash, Heir to Blackblade enters, Obsidian Battle-Axe triggers

a Warrior enters the battlefield — 189 cards in Korlash's colors can cause this (Korlash is one).

1. Thrasher Brute — When Korlash, Heir to Blackblade enters, Thrasher Brute makes each opponent lose 1 life

a land enters the battlefield — 447 cards in Korlash's colors can cause this (Korlash is one).

When a Swamp enters thanks to Korlash, Heir to Blackblade:

1. Quest for the Necropolis — puts a quest counter on itself
2. Soul Stair Expedition — puts a quest counter on itself
3. Hedron Scrabbler — gets +1/+1
4. Hedron Rover — gets +2/+2
5. Scrib Nibblers — untaps itself
6. Ob Nixilis, the Fallen — makes a player lose 3 life
7. Field of the Dead — makes a token
8. Iridescent Vinelasher — deals 1 damage
9. Bloodghast — returns itself from the graveyard
10. Tiller Engine — triggers

19 other cards care about it too. These are the ones with the most connections.

a card is discarded — 641 cards in Korlash's colors can cause this (Korlash is one).

When a permanent makes a player discard a card thanks to Korlash, Heir to Blackblade:

1. Containment Construct — brings a card back
2. Moonstone, Harsh Mistress — brings a card back
3. Archfiend of Ifnir — puts a counter on a creature
4. Tinybones, Pocket Nuisance — deals 1 damage
5. Horror of the Broken Lands — gets +2/+1
6. Cryptcaller Chariot — makes that many tokens
7. Dying to Serve — makes a token
8. Currency Converter — exiles it
9. Hostile Investigator — triggers
10. Bag of Holding — exiles it

19 other cards care about it too. These are the ones with the most connections.

a card in a graveyard — 2,555 cards in Korlash's colors can cause this (Korlash is one).

Korlash, Heir to Blackblade:

1. Heart-Shaped Herb — puts cards into the graveyard that Heart-Shaped Herb can bring back
2. Rescue from the Underworld — puts cards into the graveyard that Rescue from the Underworld can bring back
3. Victimize — puts cards into the graveyard that Victimize can bring back
4. Tergrid, God of Fright // Tergrid's Lantern — puts cards into the graveyard that Tergrid, God of Fright // Tergrid's Lantern can bring back
5. Sivriss, Nightmare Speaker — puts cards into the graveyard that Sivriss, Nightmare Speaker can bring back
6. Repentant Vampire — fills your graveyard toward the 7 or more cards Repentant Vampire needs
7. Treacherous Vampire — fills your graveyard toward the 7 or more cards Treacherous Vampire needs
8. Xiahou Dun, the One-Eyed — puts cards into the graveyard that Xiahou Dun, the One-Eyed can bring back
9. Gloomdrifter — fills your graveyard toward the 7 or more cards Gloomdrifter needs
10. Loot, the Anomaly — fills your graveyard toward the 7 or more cards Loot, the Anomaly needs

138 other cards care about it too. These are the ones with the most connections.

anything goes to a graveyard — 2,555 cards in Korlash's colors can cause this (Korlash is one).

When a card hits the graveyard thanks to Korlash, Heir to Blackblade:

1. Planar Void — hits a graveyard
2. Measure of Wickedness — gives an opponent control of itself

3 other cards care about it too. These are the ones with the most connections.

a creature attacks — 3,478 cards in Korlash's colors can cause this (Korlash is one).

When Korlash, Heir to Blackblade attacks:

1. Adaptive Omnitool — searches a library
2. Chorale of the Void — brings a card back
3. Staff of Titania — makes a token
4. Inquisitorial Rosette — makes a token
5. Wand of Orcus — grants deathtouch
6. Andúril, Flame of the West — makes 2 tokens
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Throwing Knife — sacrifices itself

48 other cards care about it too. These are the ones with the most connections.

anything attacks — 3,478 cards in Korlash's colors can cause this (Korlash is one).

When Korlash, Heir to Blackblade attacks:

1. Grim Javelineer — gives +1/+0
2. ED-E, Lonesome Eyebot — puts a quest counter on itself
3. Fire Navy Trebuchet — makes a token
4. Stensian Sanguinist // Exsanguinate — grants deathtouch
5. Rev, Tithe Extractor — grants deathtouch
6. Boggart Prankster — gives +1/+0
7. Within Range — makes each opponent lose life
8. Twins of Discord — triggers

11 other cards care about it too. These are the ones with the most connections.

a creature blocks — 3,478 cards in Korlash's colors can cause this (Korlash is one).

When Korlash, Heir to Blackblade blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Dead-Iron Sledge — kills a creature

6 other cards care about it too. These are the ones with the most connections.