Sonic the Hedgehog

a Warrior it applies speed increase to — 658 cards in Sonic the Hedgehog's colors can cause this.

1. Kor Blademaster — Kor Blademaster gives Sonic the Hedgehog haste

657 other cards cause it too. These are the ones with the most connections.

a Warrior creature enters the battlefield — 683 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

1. Obsidian Battle-Axe — When Sonic the Hedgehog enters, Obsidian Battle-Axe triggers

a Warrior enters the battlefield — 685 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

1. Mardu Woe-Reaper — When Sonic the Hedgehog enters, Mardu Woe-Reaper hits a graveyard

a Warrior creature it grants types to — 683 cards in Sonic the Hedgehog's colors can cause this.

1. Warrior's Sword — Warrior's Sword gives Sonic the Hedgehog an extra creature type

682 other cards cause it too. These are the ones with the most connections.

a creature gets a counter — 1,135 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When a creature gets a counter thanks to Sonic the Hedgehog:

1. Casey Jones, Back Alley Brute — deals that much damage
2. Danny Pink — draws you 1 card
3. Omarthis, Ghostfire Initiate — puts a counter on a permanent
4. Rikku, Resourceful Guardian — triggers

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

a token enters the battlefield — 1,979 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When a Treasure enters thanks to Sonic the Hedgehog:

1. Belladonna Took — gains you 1 life
2. Lucy MacLean, Positively Armed — makes a token
3. Mister Fantastic, Reed Richards — draws you 1 card
4. Caretaker's Talent — draws you 1 card
5. Spiritcall Enthusiast // Scrollboost — becomes prepared
6. Junk Winder — taps a creature, artifact, enchantment, planeswalker or battle an opponent controls

a token is created — 1,980 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog 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

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

anything gets a counter — 2,090 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

1. All Will Be One — When a creature gets a counter thanks to Sonic the Hedgehog, All Will Be One deals that much damage

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

an artifact it grants types to — 3,563 cards in Sonic the Hedgehog's colors can cause this.

1. Silverskin Armor — Silverskin Armor gives Sonic the Hedgehog an extra creature type

3,562 other cards cause it too. These are the ones with the most connections.

an artifact enters the battlefield — 3,658 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When a Treasure enters thanks to Sonic the Hedgehog:

1. Transplant Theorist — draws you 1 card
2. Mechan Assembler — makes a token
3. Glassdust Hulk — gets +1/+1
4. Rook Turret — draws you 1 card
5. Hedron Detonator — deals 1 damage
6. Mandible Justiciar — gets +1/+1
7. Skyswimmer Koi — draws you 1 card
8. Kappa Cannoneer — puts a +1/+1 counter on itself
9. Machinesmith Automaton — puts a +1/+1 counter on itself
10. Quicksmith Genius — draws and discards

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

a creature attacks — 9,650 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
4. Screaming Swarm — mills a card
5. Imperious Mindbreaker — mills a card
6. Saw — sacrifices a creature
7. Ultima Weapon — kills a creature an opponent controls
8. Path of Mettle // Metzali, Tower of Triumph — triggers
9. Total War — kills a creature
10. The Spear of Leonidas — triggers

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

anything attacks — 9,650 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Guide of Souls — triggers
4. Gossip's Talent — triggers
5. Banon, the Returners' Leader — draws and discards
6. Three Dog, Galaxy News DJ — sacrifices an Aura
7. Inti, Seneschal of the Sun — triggers
8. Gut, True Soul Zealot — sacrifices a creature or artifact
9. Cool but Rude — draws and discards
10. Swashbuckler Extraordinaire — sacrifices a Treasure

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

a creature blocks — 9,650 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog blocks:

1. Tide of War — sacrifices a creature
2. Dead-Iron Sledge — kills a creature
3. Dwindle — kills a creature
4. Shield of the Righteous — triggers

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

a nontoken creature attacks — 9,650 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog attacks:

1. Basri Ket — makes a token
2. Militia's Pride — makes a token

a creature enters the battlefield — 10,645 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

When Sonic the Hedgehog 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. The Neutrinos — gets +1/+0
5. Wingnut, Bat on the Belfry — grants flying, haste and menace
6. Aetherstorm Roc — puts a counter on a permanent you control
7. Raphael, Most Attitude — exiles a card from your library

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

anything enters the battlefield — 15,181 cards in Sonic the Hedgehog's colors can cause this (Sonic the Hedgehog is one).

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

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