Sword of Once and Future

an instant in a graveyard — 2 cards in the game can cause this (Sword of Once and Future is one).

1. Makeshift Mannequin — When Makeshift Mannequin is in the graveyard, Sword of Once and Future can bring it back
2. Supper for Spiders — When Supper for Spiders is in the graveyard, Sword of Once and Future can bring it back

an instant leaves a graveyard — 202 cards in the game can cause this (Sword of Once and Future is one).

1. Murktide Regent — When an instant leaves a graveyard thanks to Sword of Once and Future, Murktide Regent puts a +1/+1 counter on itself

you surveil — 233 cards in the game can cause this (Sword of Once and Future is one).

When Sword of Once and Future surveils:

1. Mirko, Obsessive Theorist — puts a +1/+1 counter on itself
2. Prudent Fateseer // Peer Review — gives +1/+0
3. Diviner of Victory // Unwind History — gets +1/+1
4. Saheeli, Consul of Oversight — makes a token
5. Copy Catchers — makes a token
6. Proft, Consulting Detective — puts a +1/+1 counter on itself
7. Matoya, Archon Elder — draws you 1 card
8. Denzilore Fatehold — puts a counter on a creature
9. Whispering Snitch — deals 1 damage
10. Blood Operative — makes you lose life

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

a nontoken Equipment enters the battlefield — 649 cards in the game can cause this (Sword of Once and Future is one).

1. Firion, Wild Rose Warrior — When Sword of Once and Future enters, Firion, Wild Rose Warrior makes a token

an Equipment enters the battlefield — 658 cards in the game can cause this (Sword of Once and Future is one).

When Sword of Once and Future 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.

anything is exiled — 2,497 cards in the game can cause this (Sword of Once and Future is one).

1. The War Doctor — When Sword of Once and Future is exiled, The War Doctor puts a time counter on itself

anything leaves a graveyard — 2,503 cards in the game can cause this (Sword of Once and Future is one).

When an instant or sorcery leaves a graveyard thanks to Sword of Once and Future:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

13 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 (Sword of Once and Future is one).

When Sword of Once and Future 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 sorcery is cast — 3,720 cards in the game can cause this (Sword of Once and Future is one).

1. Electro, Assaulting Battery — When an instant is cast thanks to Sword of Once and Future, Electro, Assaulting Battery adds 1 mana
2. Spellweaver Volute — When a sorcery is cast thanks to Sword of Once and Future, Spellweaver Volute copies a spell
3. Riku of Two Reflections — When an instant is cast thanks to Sword of Once and Future, Riku of Two Reflections copies a spell
4. Sword of Wealth and Power — When an instant is cast thanks to Sword of Once and Future, Sword of Wealth and Power copies a spell
5. Extus, Oriq Overlord // Awaken the Blood Avatar — When an instant is cast thanks to Sword of Once and Future, Extus, Oriq Overlord // Awaken the Blood Avatar brings a card back
6. Metallurgic Summonings — When an instant is cast thanks to Sword of Once and Future, Metallurgic Summonings makes a token
7. Storm-Kiln Artist — When an instant is cast thanks to Sword of Once and Future, Storm-Kiln Artist makes a token
8. Niv-Mizzet, Parun — When an instant is cast thanks to Sword of Once and Future, Niv-Mizzet, Parun draws you 1 card
9. Tor Wauki the Younger — When an instant is cast thanks to Sword of Once and Future, Tor Wauki the Younger deals 2 damage
10. Mica, Reader of Ruins — When an instant is cast thanks to Sword of Once and Future, Mica, Reader of Ruins sacrifices an artifact

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

an artifact it grants abilities to — 4,531 cards in the game can cause this.

1. Darksteel Forge — Darksteel Forge gives Sword of Once and Future indestructible

4,530 other cards cause it too. These are the ones with the most connections.

an artifact it applies untap to — 4,531 cards in the game can cause this.

1. Unwinding Clock — Unwinding Clock gives Sword of Once and Future an extra untap

4,530 other cards cause it too. These are the ones with the most connections.

a card in a graveyard — 7,589 cards in the game can cause this (Sword of Once and Future is one).

Sword of Once and Future puts cards into the graveyard that:

1. Gale, Waterdeep Prodigy — can bring back
2. Harness the Storm — can bring back

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