Entity Tracker

a Room is fully unlocked — 28 cards in the game can cause this.

1. Bottomless Pool // Locker Room — When Bottomless Pool // Locker Room is fully unlocked, Entity Tracker draws you 1 card
2. Mirror Room // Fractured Realm — When Mirror Room // Fractured Realm is fully unlocked, Entity Tracker draws you 1 card
3. Underwater Tunnel // Slimy Aquarium — When Underwater Tunnel // Slimy Aquarium is fully unlocked, Entity Tracker draws you 1 card
4. Meat Locker // Drowned Diner — When Meat Locker // Drowned Diner is fully unlocked, Entity Tracker draws you 1 card
5. Central Elevator // Promising Stairs — When Central Elevator // Promising Stairs is fully unlocked, Entity Tracker draws you 1 card

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

a Scout deals combat damage — 353 cards in the game can cause this (Entity Tracker is one).

1. Vaan, Street Thief — When Entity Tracker deals combat damage, Vaan, Street Thief exiles a card from a library

put an enchantment onto the battlefield — 3,743 cards in the game can cause this.

1. Displacer Kitten — When an enchantment enters thanks to Displacer Kitten, Entity Tracker draws you 1 card
2. Wiccan, Rising Magician — When an enchantment enters thanks to Wiccan, Rising Magician, Entity Tracker draws you 1 card
3. Aerie Worshippers — When a Bird enters thanks to Aerie Worshippers, Entity Tracker draws you 1 card
4. Tunnel Surveyor — When a Glimmer enters thanks to Tunnel Surveyor, Entity Tracker draws you 1 card
5. Eldrazi Confluence — When an enchantment enters thanks to Eldrazi Confluence, Entity Tracker draws you 1 card
6. Glimmerburst — When a Glimmer enters thanks to Glimmerburst, Entity Tracker draws you 1 card
7. Elrond, Moon-Reader — When an enchantment enters thanks to Elrond, Moon-Reader, Entity Tracker draws you 1 card
8. Diminisher Witch — When a Role enters thanks to Diminisher Witch, Entity Tracker draws you 1 card

3,735 other cards cause it too. These are the ones with the most connections.

a card is drawn — 3,815 cards in the game can cause this (Entity Tracker is one).

When Entity Tracker makes a player draw a card:

1. Temmet, Naktamun's Will — gives +1/+1
2. Niv-Mizzet, Parun — deals 1 damage
3. Aether Syphon — mills a card
4. Ob Nixilis, the Hate-Twisted — deals 1 damage
5. The Locust God — makes a token
6. Starving Revenant — makes each opponent lose 1 life
7. Diviner's Wand — gets +1/+1
8. Ominous Seas — puts a foreshadow counter on itself
9. Dream Trawler — gets +1/+0
10. Orcish Bowmasters — deals 1 damage

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

a Human enters the battlefield — 4,639 cards in the game can cause this (Entity Tracker is one).

When Entity Tracker enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

2 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 (Entity Tracker is one).

When Entity Tracker attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Grim Javelineer — gives +1/+0
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers
6. Campsite Cuisine — sacrifices a Food
7. Gossip's Talent — triggers
8. Banon, the Returners' Leader — draws and discards
9. Toph, Earthbending Master — puts a counter on a permanent
10. Three Dog, Galaxy News DJ — sacrifices an Aura

113 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 (Entity Tracker is one).

When Entity Tracker attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
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. Total War — kills a creature

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

a creature blocks — 17,934 cards in the game can cause this (Entity Tracker is one).

When Entity Tracker blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Heat of Battle — deals 1 damage
5. Battle Strain — deals 1 damage
6. Tide of War — sacrifices a creature
7. Dead-Iron Sledge — kills a creature
8. Dwindle — kills a creature
9. Shield of the Righteous — triggers

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Entity Tracker is one).

When Entity Tracker attacks:

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

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

When Entity Tracker enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

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

anything enters the battlefield — 26,499 cards in the game can cause this (Entity Tracker is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Entity Tracker enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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