Perimeter Enforcer

a Detective enters the battlefield — 148 cards in the game can cause this.

1. Case of the Pilfered Proof — When Perimeter Enforcer enters, Case of the Pilfered Proof puts a counter on a permanent
2. Projektor Inspector — When Perimeter Enforcer enters, Projektor Inspector draws you 1 card
3. Bloodline Pretender — When Bloodline Pretender enters, Perimeter Enforcer gets +1/+1
4. Marketwatch Phantom — When Marketwatch Phantom enters, Perimeter Enforcer gets +1/+1
5. Barkform Harvester — When Barkform Harvester enters, Perimeter Enforcer gets +1/+1
6. Merchant of Truth — When Merchant of Truth enters, Perimeter Enforcer gets +1/+1
7. Otherworldly Escort — When Otherworldly Escort enters, Perimeter Enforcer gets +1/+1
8. Irregular Cohort — When Irregular Cohort enters, Perimeter Enforcer gets +1/+1
9. Three Tree Mascot — When Three Tree Mascot enters, Perimeter Enforcer gets +1/+1
10. Universal Automaton — When Universal Automaton enters, Perimeter Enforcer gets +1/+1
11. Rooftop Percher — When Rooftop Percher enters, Perimeter Enforcer gets +1/+1
12. Changeling Hero — When Changeling Hero enters, Perimeter Enforcer gets +1/+1

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

life is gained — 2,076 cards in the game can cause this (Perimeter Enforcer is one).

When Perimeter Enforcer gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

84 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 (Perimeter Enforcer is one).

When Perimeter Enforcer 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 (Perimeter Enforcer is one).

When Perimeter Enforcer attacks:

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

116 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 (Perimeter Enforcer is one).

When Perimeter Enforcer 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

181 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 (Perimeter Enforcer is one).

When Perimeter Enforcer 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. Tide of War — sacrifices a creature
5. Dead-Iron Sledge — kills a creature
6. Dwindle — kills a creature
7. Shield of the Righteous — triggers

21 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 (Perimeter Enforcer is one).

When Perimeter Enforcer 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 (Perimeter Enforcer is one).

When Perimeter Enforcer enters:

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

304 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 (Perimeter Enforcer is one).

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

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