Brain Freeze

a card is milled — 772 cards in the game can cause this (Brain Freeze is one).

1. Lo and Li, Royal Advisors — When Brain Freeze makes a player mill a card, Lo and Li, Royal Advisors puts a counter on an Advisor

an instant is cast — 3,931 cards in the game can cause this (Brain Freeze is one).

When Brain Freeze is cast:

1. Lunar Mystic — draws you 1 card
2. Ojer Pakpatiq, Deepest Epoch // Temple of Cyclical Time — grants rebound
3. Repeated Reverberation — copies an ability
4. Riku of Two Reflections — copies a spell
5. Sword of Wealth and Power — copies a spell
6. Lilah, Undefeated Slickshot — gets +1/+1
7. Gale, Waterdeep Prodigy — brings a card back
8. Harness the Storm — brings a card back
9. In the Eye of Chaos — counters a spell
10. Niblis of Frost — taps a creature an opponent controls

427 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 (Brain Freeze is one).

1. Samwise Gamgee — Brain Freeze puts cards into the graveyard that Samwise Gamgee can bring back
2. Fire Nation Salvagers — Brain Freeze puts cards into the graveyard that Fire Nation Salvagers can bring back
3. Bloodbond March — Brain Freeze puts cards into the graveyard that Bloodbond March can bring back
4. Transplant Theorist — Brain Freeze puts cards into the graveyard that Transplant Theorist can bring back
5. Heart-Shaped Herb — Brain Freeze puts cards into the graveyard that Heart-Shaped Herb can bring back
6. Wayward Angel — Brain Freeze fills your graveyard toward the 7 or more cards Wayward Angel needs
7. Rescue from the Underworld — Brain Freeze puts cards into the graveyard that Rescue from the Underworld can bring back
8. Victimize — Brain Freeze puts cards into the graveyard that Victimize can bring back
9. Bound // Determined — Brain Freeze puts cards into the graveyard that Bound // Determined can bring back
10. Enlightened Confidant — Brain Freeze puts cards into the graveyard that Enlightened Confidant 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 (Brain Freeze is one).

When a card hits the graveyard thanks to Brain Freeze:

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 (Brain Freeze is one).

When Brain Freeze is cast:

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

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