Knuckles the Echidna

a Warrior attacks — 1,319 cards in the game can cause this (Knuckles the Echidna is one).

1. Najeela, the Blade-Blossom — When Knuckles the Echidna attacks, Najeela, the Blade-Blossom makes a token

a Warrior deals combat damage — 1,319 cards in the game can cause this (Knuckles the Echidna is one).

1. Raiders' Spoils — When Knuckles the Echidna deals combat damage, Raiders' Spoils makes you lose life

a Warrior creature enters the battlefield — 1,401 cards in the game can cause this (Knuckles the Echidna is one).

1. Obsidian Battle-Axe — When Knuckles the Echidna enters, Obsidian Battle-Axe triggers

a Warrior enters the battlefield — 1,403 cards in the game can cause this (Knuckles the Echidna is one).

When Knuckles the Echidna enters:

1. Mardu Woe-Reaper — hits a graveyard
2. Thrasher Brute — makes each opponent lose 1 life
3. Decorated Champion — puts a +1/+1 counter on itself

a Warrior creature it grants types to — 1,404 cards in the game can cause this.

1. Warrior's Sword — Warrior's Sword gives Knuckles the Echidna an extra creature type

1,403 other cards cause it too. These are the ones with the most connections.

a token enters the battlefield — 3,710 cards in the game can cause this (Knuckles the Echidna is one).

When a Treasure enters thanks to Knuckles the Echidna:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes a token
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Knuckles the Echidna is one).

When Knuckles the Echidna makes a Treasure token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

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

an artifact it grants types to — 4,531 cards in the game can cause this.

1. Silverskin Armor — Silverskin Armor gives Knuckles the Echidna an extra creature type

4,530 other cards cause it too. These are the ones with the most connections.

an artifact enters the battlefield — 4,643 cards in the game can cause this (Knuckles the Echidna is one).

When a Treasure enters thanks to Knuckles the Echidna:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

56 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 (Knuckles the Echidna is one).

When Knuckles the Echidna attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

121 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 (Knuckles the Echidna is one).

When Knuckles the Echidna attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Path of Mettle // Metzali, Tower of Triumph — triggers

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

a creature blocks — 17,934 cards in the game can cause this (Knuckles the Echidna is one).

When Knuckles the Echidna blocks:

1. Tide of War — sacrifices a creature
2. Dead-Iron Sledge — kills a creature

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

a creature deals combat damage — 17,934 cards in the game can cause this.

When Knuckles the Echidna deals combat damage:

1. Embermaw Hellion — adds 1 to the damage
2. Torbran, Thane of Red Fell — adds 2 to the damage

17,932 other cards cause it too. These are the ones with the most connections.

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

When Knuckles the Echidna enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Ray Fillet, Wave Warrior — puts a counter on itself
4. Legolas Greenleaf — puts a counter on a permanent
5. The Neutrinos — gets +1/+0
6. Wingnut, Bat on the Belfry — grants flying, haste and menace
7. Aetherstorm Roc — puts a counter on a permanent you control
8. Raphael, Most Attitude — exiles a card from your library

329 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 (Knuckles the Echidna is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Knuckles the Echidna enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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