The Millennium Calendar

an artifact is sacrificed — 761 cards in the game can cause this (The Millennium Calendar is one).

When you sacrifice The Millennium Calendar:

1. Megatron, Tyrant // Megatron, Destructive Force — deals the sacrificed artifact's mana value damage
2. Moonstone Eulogist — puts a +1/+1 counter on itself
3. Magnetic Snuffler — puts a +1/+1 counter on itself
4. Gleaming Geardrake — puts a +1/+1 counter on itself
5. Esoteric Duplicator — makes a token
6. Biotech Specialist — deals 2 damage
7. Jaws, Relentless Predator — deals 1 damage
8. Crime Novelist — puts a +1/+1 counter on itself
9. Vengeful Tracker — deals 2 damage

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

an artifact in a graveyard — 1,226 cards in the game can cause this (The Millennium Calendar is one).

When The Millennium Calendar is in the graveyard:

1. Loran, Disciple of History — can bring it back
2. The Emperor of Palamecia // The Lord Master of Hell — gets bigger
3. Builder's Talent — can bring it back
4. Trading Post — can bring it back
5. Tasigur, the Golden Fang — can bring it back
6. Serpent of the Pass — gets bigger
7. Emeria Shepherd — can bring it back
8. Goblin Engineer — can bring it back
9. Daretti, Rocketeer Engineer — can bring it back
10. Scrap Welder — can bring it back

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

a nontoken artifact is put into a graveyard from the battlefield — 1,226 cards in the game can cause this (The Millennium Calendar is one).

When The Millennium Calendar is put into a graveyard from the battlefield:

1. Pia's Revolution — deals 3 damage
2. Farid, Enterprising Salvager — makes a token
3. Psychomancer — makes each opponent lose 1 life
4. Sly Requisitioner — makes a token
5. Slagstone Refinery — makes a token
6. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

1 other card cares about it too. These are the ones with the most connections.

an artifact goes to a graveyard — 1,250 cards in the game can cause this (The Millennium Calendar is one).

When The Millennium Calendar hits the graveyard:

1. Ultron the Annihilator — makes each opponent lose 1 life
2. Ultron's Auxiliary — puts a +1/+1 counter on itself

an artifact is put into a graveyard from the battlefield — 1,254 cards in the game can cause this (The Millennium Calendar is one).

When The Millennium Calendar is put into a graveyard from the battlefield:

1. Party Dude — draws you 1 card
2. Tezzeret's Touch — brings a card back
3. Krenko, Baron of Tin Street — makes a token
4. Syr Ginger, the Meal Ender — puts a +1/+1 counter on itself
5. Shard of the Void Dragon — puts 2 +1/+1 counters on itself
6. Kibo, Uktabi Prince — puts a counter on an Ape or Monkey
7. Ich-Tekik, Salvage Splicer — puts a +1/+1 counter on itself
8. Gremlin Infestation — makes a token
9. Summoning Station — untaps itself
10. Marionette Master — makes each opponent lose life equal to this creature's power

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

an artifact leaves the battlefield — 1,680 cards in the game can cause this (The Millennium Calendar is one).

1. Sludge Strider — When The Millennium Calendar leaves the battlefield, Sludge Strider makes a player lose 1 life

life is lost — 3,160 cards in the game can cause this (The Millennium Calendar is one).

When a permanent makes a player lose life thanks to The Millennium Calendar:

1. Far Fortune, End Boss — raises your speed
2. Zahur, Glory's Past — raises your speed
3. Mendicant Core, Guidelight — raises your speed
4. Aether Syphon — raises your speed
5. Vnwxt, Verbose Host — raises your speed
6. Embalmed Ascendant — raises your speed
7. Slick Imitator — raises your speed
8. Nesting Bot — raises your speed
9. Howlsquad Heavy — raises your speed
10. Hour of Victory — raises your speed

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

anything is sacrificed — 3,450 cards in the game can cause this (The Millennium Calendar is one).

1. Gorbag of Minas Morgul — When you sacrifice The Millennium Calendar, Gorbag of Minas Morgul triggers

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

an artifact is cast — 3,683 cards in the game can cause this (The Millennium Calendar is one).

When The Millennium Calendar is cast:

1. Death to Our Enemies — makes a token
2. Sai, Master Thopterist — makes a token
3. Ravenous Robots — makes a token
4. Pinnacle Emissary — makes a token
5. Mirrodin Besieged — makes a token
6. Poetic Ingenuity — makes a token
7. Digsite Engineer — makes a token
8. Myrsmith — makes a token
9. Riddlesmith — draws you 1 card
10. Biotransference — makes you lose life

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

a nontoken artifact enters the battlefield — 3,768 cards in the game can cause this (The Millennium Calendar is one).

1. Ultron, Artificial Malevolence — When The Millennium Calendar enters, Ultron, Artificial Malevolence makes a token

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