Smaug, the Great Calamity // Spew Flame

hits creature — 495 cards in Smaug's colors can cause this (Smaug is one).

1. Industrial Advancement — Industrial Advancement can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library
2. Divergent Transformations — Divergent Transformations can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library
3. Transmogrify — Transmogrify can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library
4. Lukka, Coppercoat Outcast — Lukka, Coppercoat Outcast can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library
5. Dreamshaper Shaman — Dreamshaper Shaman can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library
6. Identity Echo — Identity Echo can put Smaug, the Great Calamity // Spew Flame onto the battlefield from your library

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

an Adventure sorcery is cast — 8 cards in Smaug's colors can cause this (Smaug is one).

1. Lucky Clover — When Smaug, the Great Calamity // Spew Flame is cast, Lucky Clover copies a spell

a Dragon deals combat damage — 194 cards in Smaug's colors can cause this (Smaug is one).

1. Parapet Thrasher — When Smaug, the Great Calamity // Spew Flame deals combat damage, Parapet Thrasher triggers

a Dragon attacks — 194 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame attacks:

1. Utvara Hellkite — makes a token
2. Invasion of Tarkir // Defiant Thundermaw — deals 2 damage

a nontoken Dragon enters the battlefield — 201 cards in Smaug's colors can cause this (Smaug is one).

1. Lathliss, Dragon Queen — When Smaug, the Great Calamity // Spew Flame enters, Lathliss, Dragon Queen makes a token

a Dragon enters the battlefield — 226 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame enters:

1. Dragon Tempest — deals damage
2. Sarkhan, Dragon Ascendant — puts a +1/+1 counter on itself
3. Ganax, Astral Hunter — makes a token
4. Scourge of Valkas — deals damage
5. Dragon's Hoard — puts a gold counter on itself
6. Spit Flame — returns itself from the graveyard
7. Breaching Dragonstorm — triggers

anything deals noncombat damage — 1,797 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame deals noncombat damage:

1. Quest for Pure Flame — puts a quest counter on itself
2. Soul-Scar Mage — puts that many counters on a permanent
3. Fear of Burning Alive — deals that amount damage
4. Chandra's Incinerator — deals that much damage
5. Chandra's Pyreling — gets +1/+0
6. Talon of Pain — puts a charge counter on itself
7. Asgardian Inspiration — returns itself from the graveyard
8. Thor, Guardian of Midgard — exiles a card from your library
9. Virtue of Courage // Embereth Blaze — exiles a card from your library

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

a sorcery is cast — 811 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame is cast:

1. Tomik, Izzet Sparkmage — gets +1/+1
2. Tetsuko Umezawa, Pursuer — gets +1/+1
3. Thor, God of Thunder — deals that spell's mana value damage
4. Vindictive Flamestoker — puts a oil counter on itself
5. Heartfire Immolator — gets +1/+1
6. Blazing Bomb — puts a +1/+1 counter on itself
7. The Fantasticar — turns something into a creature
8. Pompous Battlemage // Improvised Act — gets +1/+1
9. Artist's Talent — draws and discards
10. The Vision — triggers

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

a creature attacks — 3,451 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame attacks:

1. Adaptive Omnitool — searches a library
2. Staff of Titania — makes a token
3. Saw — sacrifices a creature
4. Ultima Weapon — kills a creature an opponent controls
5. Total War — kills a creature
6. The Spear of Leonidas — triggers
7. Norin the Wary — flickers itself
8. Throwing Knife — sacrifices itself

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

a creature blocks — 3,451 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame blocks:

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

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

anything attacks — 3,451 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Misty Mountains Raider — puts 2 counters on a Goblin or Army
3. Razorkin Hordecaller — makes a token
4. War Effort — makes a token
5. Inti, Seneschal of the Sun — triggers
6. Gut, True Soul Zealot — sacrifices a creature or artifact
7. Cool but Rude — draws and discards
8. Swashbuckler Extraordinaire — sacrifices a Treasure
9. Puppet Master, String Puller — triggers

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

a creature enters the battlefield — 3,801 cards in Smaug's colors can cause this (Smaug is one).

When Smaug, the Great Calamity // Spew Flame enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Wingnut, Bat on the Belfry — grants flying, haste and menace
4. Raphael, Most Attitude — exiles a card from your library

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