Nikko-Onna

a nontoken Spirit deals combat damage — 725 cards in the game can cause this (Nikko-Onna is one).

1. Millicent, Restless Revenant — When Nikko-Onna deals combat damage, Millicent, Restless Revenant makes a token

a nontoken Spirit enters the battlefield — 727 cards in the game can cause this (Nikko-Onna is one).

1. Baboon Spirit — When Nikko-Onna enters, Baboon Spirit makes a token

a Spirit enters the battlefield — 863 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna enters:

1. Mausoleum Wanderer — gets +1/+1
2. Drogskol Cavalry — gains you 2 life
3. Vanguard of the Restless — returns itself from the graveyard
4. Nebelgast Herald — taps a creature an opponent controls

an enchantment in a graveyard — 983 cards in the game can cause this (Nikko-Onna is one).

Nikko-Onna puts cards into the:

1. Bilbo, Unexpected Adventurer — graveyard that Bilbo, Unexpected Adventurer can bring back
2. Narset, Enlightened Exile — graveyard that Narset, Enlightened Exile can bring back
3. Fallaji Archaeologist — graveyard that Fallaji Archaeologist can bring back
4. Chandra, Chill of Compliance — graveyard that Chandra, Chill of Compliance can bring back
5. Cantivore — graveyard, and Cantivore gets bigger

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

an enchantment is put into a graveyard from the battlefield — 987 cards in the game can cause this (Nikko-Onna is one).

1. Femeref Enchantress — When an enchantment is put into a graveyard from the battlefield thanks to Nikko-Onna, Femeref Enchantress draws you 1 card

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

a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna leaves the battlefield:

1. Tokka & Rahzar, Unsupervised — puts a +1/+1 counter on itself
2. Splinter, the Mentor — makes a token
3. Rat King, Pale Piper — makes a token
4. Dual Nature — exiles a creature

a creature leaves the battlefield — 4,238 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna leaves the battlefield:

1. Lunarch Veteran // Luminous Phantom — gains you 1 life
2. Extractor Demon — mills a card
3. Aang, Airbending Master — puts a counter on a permanent
4. Dour Port-Mage — draws you 1 card
5. Vela the Night-Clad — makes each opponent lose 1 life
6. Taeko, the Patient Avalanche — scries
7. Ninth Bridge Patrol — puts a +1/+1 counter on itself
8. Funeral March — makes a player sacrifice a creature
9. Sally Sparrow — triggers
10. Aang, at the Crossroads // Aang, Destined Savior — triggers

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

a card in a graveyard — 7,589 cards in the game can cause this (Nikko-Onna is one).

1. Heart-Shaped Herb — Nikko-Onna puts cards into the graveyard that Heart-Shaped Herb can bring back
2. Enlightened Confidant — Nikko-Onna puts cards into the graveyard that Enlightened Confidant can bring back
3. Tergrid, God of Fright // Tergrid's Lantern — Nikko-Onna puts cards into the graveyard that Tergrid, God of Fright // Tergrid's Lantern can bring back
4. Grazing Kelpie — Nikko-Onna puts cards into the graveyard that Grazing Kelpie can bring back
5. Dauthi Voidwalker — Cards Nikko-Onna would put into an opponent's graveyard are exiled by Dauthi Voidwalker instead, and it can play from among them
6. Endurance — Nikko-Onna puts cards into the graveyard that Endurance can bring back
7. Thieves' Guild Enforcer — Nikko-Onna fills an opponent's graveyard toward the 8 or more cards Thieves' Guild Enforcer needs
8. Soaring Thought-Thief — Nikko-Onna fills an opponent's graveyard toward the 8 or more cards Soaring Thought-Thief needs
9. Athreos, Shroud-Veiled — Nikko-Onna puts cards into the graveyard that Athreos, Shroud-Veiled can bring back
10. Merfolk Windrobber — Nikko-Onna fills an opponent's graveyard toward the 8 or more cards Merfolk Windrobber needs

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Nikko-Onna is one).

When an enchantment hits the graveyard thanks to Nikko-Onna:

1. The Haunt of Hightower — puts a +1/+1 counter on itself
2. Duskmantle Guildmage — makes each opponent lose 1 life
3. Vulturous Zombie — puts a +1/+1 counter on itself
4. Bloodchief Ascension — makes each opponent lose 2 life
5. Planar Void — hits a graveyard

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

anything attacks — 17,934 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna attacks:

1. Shaun, Father of Synths — makes a token
2. Far Fortune, End Boss — deals 1 damage
3. Temmet, Naktamun's Will — draws you 1 card
4. Optimus Prime, Hero // Optimus Prime, Autobot Leader — puts a counter on a permanent
5. Invisible Woman — triggers
6. Caesar, Legion's Emperor — sacrifices a creature
7. Guide of Souls — triggers

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

a creature attacks — 17,934 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna attacks:

1. Adaptive Omnitool — searches a library
2. Saw — sacrifices a creature

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

a creature is cast — 18,010 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna is cast:

1. Champions of the Perfect — draws you 1 card
2. God-Eternal Oketra — makes a token
3. Bloodbond March — brings a card back

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

a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (Nikko-Onna is one).

1. Samwise Gamgee — When Nikko-Onna enters, Samwise Gamgee makes a token

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

a creature enters the battlefield — 19,800 cards in the game can cause this (Nikko-Onna is one).

When Nikko-Onna enters:

1. Enduring Innocence — draws you 1 card
2. Enduring Courage — gives +2/+0
3. Slash, Reptile Rampager — deals 2 damage
4. Ray Fillet, Wave Warrior — puts a counter on itself
5. Aetherstorm Roc — puts a counter on a permanent you control

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

anything enters the battlefield — 26,499 cards in the game can cause this (Nikko-Onna is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Nikko-Onna enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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