Grief

an Elemental creature in a graveyard — 88 cards in the game can cause this (Grief is one).

1. Thunderkin Awakener — When Grief is in the graveyard, Thunderkin Awakener can bring it back

a nontoken Elemental is sacrificed — 90 cards in the game can cause this (Grief is one).

1. Ashling, the Limitless — When you sacrifice Grief, Ashling, the Limitless makes a token

an Elemental in a graveyard — 90 cards in the game can cause this (Grief is one).

When Grief is in the graveyard:

1. Sunflare Shaman — gets bigger
2. Horde of Notions — can bring it back

an Elemental is put into a graveyard from the battlefield — 93 cards in the game can cause this (Grief is one).

When Grief is put into a graveyard from the battlefield:

1. Omnath, Locus of Rage — deals 3 damage
2. Titania, Nature's Force — mills a card

an Elemental enters the battlefield — 754 cards in the game can cause this (Grief is one).

1. Champion of the Path — When Grief enters, Champion of the Path deals its power damage
2. Risen Reef — When Grief enters, Risen Reef puts a land onto the battlefield

a nontoken creature is sacrificed — 1,714 cards in the game can cause this (Grief is one).

When you sacrifice Grief:

1. Fumulus, the Infestation — makes a token
2. Bag of Devouring — exiles it

a creature is sacrificed — 1,741 cards in the game can cause this (Grief is one).

When you sacrifice Grief:

1. Ziatora, the Incinerator — deals that creature's power damage
2. Dina, Essence Brewer — draws you 1 card
3. Fleshtaker — gains you 1 life
4. Body Dropper — puts a +1/+1 counter on itself
5. Smothering Abomination — draws you 1 card
6. Kels, Fight Fixer — draws you 1 card
7. Caesar, Legion's Emperor — triggers
8. Grist, the Hunger Tide — kills a creature or planeswalker an opponent controls
9. Cabal Therapist — triggers
10. Rakdos, the Muscle — exiles a card from an opponent's library

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

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

When a permanent makes a player discard a card thanks to Grief:

1. Sangromancer — gains you 3 life
2. Lo and Li, Royal Advisors — puts a counter on an Advisor
3. Nath of the Gilt-Leaf — makes a token
4. Tourach, Dread Cantor — puts a +1/+1 counter on itself
5. Tinybones, Pocket Nuisance — deals 1 damage
6. Tinybones, Bauble Burglar — hits a graveyard
7. Fell Specter — makes each opponent lose 2 life
8. Spirit Cairn — makes a token
9. Confessor — gains you 1 life
10. Hostile Investigator — triggers

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

a creature in a graveyard — 2,769 cards in the game can cause this (Grief is one).

When Grief is in the graveyard:

1. Chainer, Dementia Master — can bring it back
2. Edgar's Awakening — can bring it back
3. Havengul Lich — can bring it back
4. Liliana the Repentant — can bring it back
5. Paleoloth — can bring it back
6. Chainer, Nightmare Adept — can bring it back
7. Banon, the Returners' Leader — can bring it back
8. Sword of Light and Shadow — can bring it back
9. Necromantic Thirst — can bring it back
10. Krile Baldesion — can bring it back

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

a nontoken creature dies — 2,769 cards in the game can cause this (Grief is one).

1. Zahur, Glory's Past — When Grief dies, Zahur, Glory's Past makes a token
2. Liesa, Forgotten Archangel — When Grief dies, Liesa, Forgotten Archangel brings a card back
3. Avacyn, Angel of Horror — When Grief dies, Avacyn, Angel of Horror brings a card back
4. Yedora, Grave Gardener — When Grief dies, Yedora, Grave Gardener brings a card back
5. Nim Deathmantle — When Grief dies, Nim Deathmantle brings a card back
6. Valkyrie's Call — When Grief dies, Valkyrie's Call brings a card back
7. Decaying Soil — When Grief dies, Decaying Soil brings a card back
8. High-Society Hunter — When Grief dies, High-Society Hunter draws you 1 card
9. Liliana, Heretical Healer // Liliana, Defiant Necromancer — When Grief dies, Liliana, Heretical Healer // Liliana, Defiant Necromancer flickers itself
10. Body Launderer — When Grief dies, Body Launderer draws and discards

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

a creature leaves the battlefield — 4,238 cards in the game can cause this (Grief is one).

1. Ninja Teen — When Grief leaves the battlefield, Ninja Teen makes each opponent lose 1 life

35 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 (Grief is one).

1. Pitchstone Wall — When Grief is in the graveyard, Pitchstone Wall can bring it back
2. Containment Construct — When Grief is in the graveyard, Containment Construct can bring it back
3. Moonstone, Harsh Mistress — When Grief is in the graveyard, Moonstone, Harsh Mistress can bring it back
4. Havi, the All-Father — Grief fills your graveyard toward the 4 or more cards Havi, the All-Father needs

440 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 (Grief is one).

1. Shaun, Father of Synths — When Grief attacks, Shaun, Father of Synths makes a token
2. Surgical Suite // Hospital Room — When Grief attacks, Surgical Suite // Hospital Room puts a counter on a creature
3. Inti, Seneschal of the Sun — When Grief attacks, Inti, Seneschal of the Sun triggers
4. Cool but Rude — When Grief attacks, Cool but Rude draws and discards

146 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 (Grief is one).

1. Chorale of the Void — When Grief attacks, Chorale of the Void brings a card back

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