The Speed Demon

a Demon enters the battlefield — 170 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

1. Blood Speaker — When The Speed Demon enters, Blood Speaker returns itself from the graveyard

life is lost — 1,256 cards in The Speed Demon's colors can cause this.

1. The Master of Lake-town — When The Speed Demon makes a player lose life, The Master of Lake-town mills a card
2. Intermediate Chirography — When The Speed Demon makes a player lose life, Intermediate Chirography puts a counter on a creature
3. Vilis, Broker of Blood — When The Speed Demon makes a player lose life, Vilis, Broker of Blood draws you that many cards
4. Vengeful Warchief — When The Speed Demon makes a player lose life, Vengeful Warchief puts a +1/+1 counter on itself
5. Moonstone Harbinger — When The Speed Demon makes a player lose life, Moonstone Harbinger gives +1/+0
6. Brainstealer Dragon — When Brainstealer Dragon makes a player lose life, The Speed Demon raises your speed
7. Glaring Fleshraker — When Glaring Fleshraker makes a player lose life, The Speed Demon raises your speed
8. Lux Artillery — When Lux Artillery makes a player lose life, The Speed Demon raises your speed
9. Gideon the Oathless — When Gideon the Oathless makes a player lose life, The Speed Demon raises your speed
10. Blood Seeker — When a permanent makes a player lose life thanks to Blood Seeker, The Speed Demon raises your speed
11. Tinybones Joins Up — When Tinybones Joins Up makes a player lose life, The Speed Demon raises your speed
12. Trespasser's Curse — When Trespasser's Curse makes a player lose life, The Speed Demon raises your speed
13. Jaws of Defeat — When a permanent makes a player lose life thanks to Jaws of Defeat, The Speed Demon raises your speed
14. Binding Agony — When Binding Agony makes a player lose life, The Speed Demon raises your speed
15. Spiteful Shadows — When a creature makes a player lose life thanks to Spiteful Shadows, The Speed Demon raises your speed
16. Oath of Lim-Dûl — When The Speed Demon makes a player lose life, Oath of Lim-Dûl sacrifices an enchantment
17. Lich's Mastery — When The Speed Demon makes a player lose life, Lich's Mastery triggers
18. Lich's Tomb — When The Speed Demon makes a player lose life, Lich's Tomb sacrifices a permanent
19. Gonti's Machinations — When The Speed Demon makes a player lose life, Gonti's Machinations puts a counter on a permanent you control

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

a card is drawn — 789 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

When The Speed Demon makes a player draw a card:

1. Starving Revenant — makes each opponent lose 1 life
2. Diviner's Wand — gets +1/+1
3. Psychosis Crawler — makes each opponent lose 1 life
4. Sheoldred, the Apocalypse — gains you 2 life
5. Moonring Mirror — exiles a card from your library

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

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

When The Speed Demon 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

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

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

When The Speed Demon 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. Curse of Disturbance — makes a token
9. Dawnsire, Sunstar Dreadnought — deals 100 damage
10. Twins of Discord — triggers

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

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

When The Speed Demon blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Barrow-Blade — strips abilities
3. Dead-Iron Sledge — kills a creature

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

a creature deals combat damage — 3,478 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

1. Hive Mind Coprocessor — When The Speed Demon deals combat damage, Hive Mind Coprocessor makes you lose life

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

a creature is cast — 3,493 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

When The Speed Demon is cast:

1. Endrek Sahr, Master Breeder — makes that spell's mana value tokens
2. Oketra's Monument — makes a token
3. Bontu's Monument — makes each opponent lose 1 life
4. Vanquisher's Banner — draws you 1 card
5. Rhonas's Monument — gives +2/+2
6. Skittering Horror — sacrifices itself
7. Skittering Skirge — sacrifices itself
8. Skittering Monstrosity — sacrifices itself
9. Hazoret's Monument — draws and discards
10. Kefnet's Monument — triggers

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

a nontoken creature enters the battlefield — 3,680 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

1. Minion Reflector — When The Speed Demon enters, Minion Reflector makes a token

a creature enters the battlefield — 3,967 cards in The Speed Demon's colors can cause this (The Speed Demon is one).

When The Speed Demon enters:

1. Ayara, First of Locthwain — makes each opponent lose 1 life
2. Blasting Station — untaps itself
3. Bloodline Pretender — puts a +1/+1 counter on itself
4. Soultether Golem — puts a time counter on itself
5. Poisonbelly Ogre — makes a player lose 1 life
6. Monkey Cage — sacrifices itself
7. Tainted Aether — makes a player sacrifice a creature or land
8. Lethal Vapors — kills it
9. Spreading Plague — kills a creature
10. Wretched Anurid — makes you lose life

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