Probe

a card is discarded — 2,042 cards in the game can cause this (Probe is one).

When Probe makes a player discard a card:

1. Ivora, Insatiable Heir — puts a +1/+1 counter on itself
2. Cool but Rude — deals 2 damage
3. Containment Construct — brings a card back
4. Moonstone, Harsh Mistress — brings a card back
5. Sangromancer — gains you 3 life
6. Lo and Li, Royal Advisors — puts a counter on an Advisor
7. Nath of the Gilt-Leaf — makes a token
8. Inti, Seneschal of the Sun — exiles a card from your library
9. Pitchstone Wall — sacrifices itself
10. Currency Converter — exiles it

51 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 (Probe is one).

1. Spellweaver Volute — When Probe is cast, Spellweaver Volute copies a spell
2. Lilah, Undefeated Slickshot — When Probe is cast, Lilah, Undefeated Slickshot gets +1/+1
3. Niblis of Frost — When Probe is cast, Niblis of Frost gets +1/+1
4. Primeval Bounty — When Probe is cast, Primeval Bounty puts 3 counters on a creature
5. Tetsuko Umezawa, Pursuer — When Probe is cast, Tetsuko Umezawa, Pursuer gets +1/+1
6. Thor, God of Thunder — When Probe is cast, Thor, God of Thunder deals that spell's mana value damage
7. Krile Baldesion — When Probe is cast, Krile Baldesion brings a card back
8. Summon: Good King Mog XII — When Probe is cast, Summon: Good King Mog XII makes a token
9. Kykar, Wind's Fury — When Probe is cast, Kykar, Wind's Fury makes a token
10. Blood Funnel — When Probe is cast, Blood Funnel sacrifices a creature

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

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

When Probe makes a player draw a card:

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

57 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 (Probe is one).

1. Gale, Waterdeep Prodigy — Probe puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
2. Harness the Storm — Probe puts cards into the graveyard that Harness the Storm can bring back
3. Samwise Gamgee — Probe puts cards into the graveyard that Samwise Gamgee can bring back
4. Bloodbond March — Probe puts cards into the graveyard that Bloodbond March can bring back
5. Transplant Theorist — Probe puts cards into the graveyard that Transplant Theorist can bring back
6. Heart-Shaped Herb — Probe puts cards into the graveyard that Heart-Shaped Herb can bring back
7. Wayward Angel — Probe fills your graveyard toward the 7 or more cards Wayward Angel needs
8. Rescue from the Underworld — Probe puts cards into the graveyard that Rescue from the Underworld can bring back
9. Victimize — Probe puts cards into the graveyard that Victimize can bring back
10. Bound // Determined — Probe 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 (Probe is one).

When a card hits the graveyard thanks to Probe:

1. The Haunt of Hightower — puts a +1/+1 counter on itself
2. Duskmantle Guildmage — makes each opponent lose 1 life
3. Vulturous Zombie — puts a +1/+1 counter on itself
4. Quest for Ancient Secrets — puts a quest counter on itself
5. Bloodchief Ascension — makes each opponent lose 2 life
6. Compost — draws you 1 card
7. Planar Void — hits a graveyard
8. Measure of Wickedness — gives an opponent control of itself
9. Energy Field — sacrifices itself

2 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 (Probe is one).

1. Windrider Wizard — When Probe is cast, Windrider Wizard draws you 1 card
2. Relic Amulet — When Probe is cast, Relic Amulet puts a charge counter on itself
3. Rockslide Sorcerer — When Probe is cast, Rockslide Sorcerer deals 1 damage
4. Umara Wizard // Umara Skyfalls — When Probe is cast, Umara Wizard // Umara Skyfalls grants flying
5. Alania, Divergent Storm — When Probe is cast, Alania, Divergent Storm makes an opponent draw 1 card
6. Umara Mystic — When Probe is cast, Umara Mystic gets +2/+0
7. Master of Winds — When Probe is cast, Master of Winds triggers

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