Killer's Mask

a nontoken Equipment enters the battlefield — 649 cards in the game can cause this (Killer's Mask is one).

1. Firion, Wild Rose Warrior — When Killer's Mask enters, Firion, Wild Rose Warrior makes a token

an Equipment enters the battlefield — 658 cards in the game can cause this (Killer's Mask is one).

When Killer's Mask enters:

1. Puresteel Paladin — draws you 1 card
2. Sokka and Suki — makes a token
3. Barret, Avalanche Leader — makes a token
4. The Mighty Thor, Jane Foster — draws you 1 card
5. Giott, King of the Dwarves — draws and discards
6. Hammer of Nazahn — triggers
7. Sigarda's Aid — triggers

5 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 (Killer's Mask is one).

When Killer's Mask is cast:

1. Mendicant Core, Guidelight — copies a spell
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. Dr. Madison Li — puts a counter on a permanent you control

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 (Killer's Mask is one).

When Killer's Mask enters:

1. Ultron, Artificial Malevolence — makes a token
2. The Prydwen, Steel Flagship — makes a token
3. Conquest Mission — puts a quest counter on itself
4. Surge Conductor — proliferates
5. Replication Specialist — makes a token
6. Weapons Manufacturing — makes a token
7. Mirrorworks — makes a token

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

When Killer's Mask enters:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

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

a card in a graveyard — 7,589 cards in the game can cause this (Killer's Mask is one).

1. Vessel of Endless Rest — Killer's Mask puts cards into the graveyard that Vessel of Endless Rest can bring back
2. Samwise Gamgee — Killer's Mask puts cards into the graveyard that Samwise Gamgee can bring back
3. Bloodbond March — Killer's Mask puts cards into the graveyard that Bloodbond March can bring back
4. Gale, Waterdeep Prodigy — Killer's Mask puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
5. Harness the Storm — Killer's Mask puts cards into the graveyard that Harness the Storm can bring back
6. Heart-Shaped Herb — Killer's Mask puts cards into the graveyard that Heart-Shaped Herb can bring back
7. Wayward Angel — Killer's Mask fills your graveyard toward the 7 or more cards Wayward Angel needs
8. Rescue from the Underworld — Killer's Mask puts cards into the graveyard that Rescue from the Underworld can bring back
9. Victimize — Killer's Mask puts cards into the graveyard that Victimize can bring back
10. Bound // Determined — Killer's Mask puts cards into the graveyard that Bound // Determined can bring back

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Killer's Mask is one).

When a card hits the graveyard thanks to Killer's Mask:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Planar Void — hits a graveyard
3. Measure of Wickedness — gives an opponent control of itself
4. Energy Field — sacrifices itself

7 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 (Killer's Mask is one).

1. T'Challa, the Black Panther — When T'Challa, the Black Panther enters thanks to Killer's Mask, it makes a token
2. The Reaper, King No More — When The Reaper, King No More enters thanks to Killer's Mask, it puts a counter on a creature
3. Rosheen, Roaring Prophet — When Rosheen, Roaring Prophet enters thanks to Killer's Mask, it mills a card
4. Kotose, the Silent Spider — When Kotose, the Silent Spider enters thanks to Killer's Mask, it brings a card back
5. HYDRA Assault Robot — When Killer's Mask enters, HYDRA Assault Robot deals 1 damage
6. Tetzin, Gnome Champion // The Golden-Gear Colossus — When Tetzin, Gnome Champion // The Golden-Gear Colossus enters thanks to Killer's Mask, it triggers
7. Meathook Massacre II — When Meathook Massacre II enters thanks to Killer's Mask, it makes a player sacrifice a creature
8. Sokka, Bold Boomeranger — When Sokka, Bold Boomeranger enters thanks to Killer's Mask, it draws and discards
9. Era of Innovation — When Killer's Mask enters, Era of Innovation puts a counter on a permanent you control
10. Nature's Wrath — When Killer's Mask enters, Nature's Wrath makes a player sacrifice a Swamp or permanent

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

anything is cast — 31,128 cards in the game can cause this (Killer's Mask is one).

1. Saheeli, Radiant Creator — When Killer's Mask is cast, Saheeli, Radiant Creator puts a counter on a permanent you control

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