Watchdog

a Dog deals combat damage — 201 cards in the game can cause this (Watchdog is one).

1. Sophia, Dogged Detective — When Watchdog deals combat damage, Sophia, Dogged Detective makes a token

an artifact attacks — 1,243 cards in the game can cause this (Watchdog is one).

When Watchdog attacks:

1. Alibou, Ancient Witness — deals X damage
2. Bio-Asset Allocator — makes each opponent lose 1 life
3. Assaultron Dominator — puts a counter on a permanent
4. Aloy, Savior of Meridian — triggers

an artifact deals combat damage — 1,243 cards in the game can cause this (Watchdog is one).

When Watchdog deals combat damage:

1. Locutus of Borg — makes a token
2. Sharding Sphinx — makes a token
3. Antagonist Incorporator — makes a token
4. Research Thief — draws you 1 card
5. Thopter Spy Network — draws you 1 card
6. Hive Mind Coprocessor — makes you lose life
7. Pia Nalaar, Chief Mechanic — puts a counter on a permanent you control
8. Automated Assembly Line — triggers

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

a nontoken artifact deals combat damage — 1,243 cards in the game can cause this (Watchdog is one).

1. Virulent Silencer — When Watchdog deals combat damage, Virulent Silencer puts 2 counters on a permanent

a creature in a graveyard — 2,769 cards in the game can cause this (Watchdog is one).

Watchdog puts cards into the graveyard that:

1. Chainer, Dementia Master — can bring back
2. The Deck of Many Things — can bring back
3. Afterlife from the Loam — can bring back
4. Crypt Champion — can bring back
5. Victor, Valgavoth's Seneschal — can bring back
6. Push // Pull — can bring back
7. Vivien on the Hunt — can bring back
8. Virtus's Maneuver — can bring back
9. Dredger's Insight — can bring back
10. Bramble Familiar // Fetch Quest — can bring back

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

a nontoken creature dies — 2,769 cards in the game can cause this (Watchdog is one).

When a creature dies thanks to Watchdog:

1. Vraska, the Silencer — brings a card back
2. High-Society Hunter — draws you 1 card
3. Overseer of the Damned — makes a token
4. Shelob, Dread Weaver — hits a graveyard
5. Ghoulish Procession — makes a token
6. Ogre Slumlord — makes a token
7. Minotaur, Roxxon CEO — makes a token
8. Harvester of Souls — draws you 1 card
9. Magus of the Bridge — exiles itself
10. Koh, the Face Stealer — exiles it

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

a creature dies — 2,830 cards in the game can cause this (Watchdog is one).

When a creature dies thanks to Watchdog:

1. Journey to Eternity // Atzal, Cave of Eternity — brings a card back
2. Avatar Destiny — mills a card
3. Blood Spatter Analysis — mills a card

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

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

1. Golbez, Crystal Collector — When Watchdog enters, Golbez, Crystal Collector surveils

69 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 (Watchdog is one).

When Watchdog attacks:

1. Shaun, Father of Synths — makes a token
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Banon, the Returners' Leader — draws and discards

161 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 (Watchdog is one).

1. Chorale of the Void — When Watchdog attacks, Chorale of the Void brings a card back

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

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

1. Liliana the Repentant — When Watchdog enters, Liliana the Repentant mills a card

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