Mountain Valley

a Mountain enters the battlefield — 64 cards in the game can cause this (Mountain Valley is one).

When a Mountain enters thanks to Mountain Valley:

1. Last Light of Durin's Day — puts a quest counter on itself
2. Staff of the Flame Magus — gains you 1 life
3. Valakut, the Molten Pinnacle — deals 3 damage

a Forest enters the battlefield — 85 cards in the game can cause this (Mountain Valley is one).

When a Forest enters thanks to Mountain Valley:

1. Titania, Nature's Force — makes a token
2. Baru, Fist of Krosa — gives +1/+1
3. Reach of Branches — returns itself from the graveyard
4. Tourach's Chant — deals 3 damage
5. Battlewand Oak — gets +2/+2
6. Staff of the Wild Magus — gains you 1 life
7. Necklace of Girion — puts a counter on a creature
8. Roiling Canopy — gives +3/+3

a land is sacrificed — 438 cards in the game can cause this (Mountain Valley is one).

When you sacrifice Mountain Valley:

1. Baloth Prime — makes a token
2. Scouring Swarm — makes a token
3. Hearthhull, the Worldseed — makes each opponent lose 2 life

a land in a graveyard — 634 cards in the game can cause this (Mountain Valley is one).

When Mountain Valley is in the graveyard:

1. Slogurk, the Overslime — can bring it back
2. Zask, Skittering Swarmlord — can bring it back
3. Glacierwood Siege — can bring it back
4. Turntimber Sower — can bring it back
5. Serra Paragon — can bring it back
6. Muldrotha, the Gravetide — can bring it back
7. Deadbridge Chant — can bring it back
8. Invasion of Tolvada // The Broken Sky — can bring it back
9. Pull Through the Weft — can bring it back
10. Conduit of Worlds — can bring it back

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

a land is put into a graveyard from the battlefield — 636 cards in the game can cause this (Mountain Valley is one).

When Mountain Valley is put into a graveyard from the battlefield:

1. Vastwood Zendikon — brings a card back
2. Nissa's Zendikon — brings a card back
3. Corrupted Zendikon — brings a card back
4. Guardian Zendikon — brings a card back
5. Crusher Zendikon — brings a card back
6. Wind Zendikon — brings a card back
7. Akki Raider — gets +1/+0
8. Dingus Egg — deals 2 damage
9. Genju of the Realm — returns itself from the graveyard

1 other card cares about it too. These are the ones with the most connections.

a land goes to a graveyard — 683 cards in the game can cause this (Mountain Valley is one).

When Mountain Valley hits the graveyard:

1. The Gitrog Monster — draws you 1 card
2. Skola Grovedancer — gains you 1 life
3. Sand Scout — makes a token
4. Crawling Sensation — makes a token
5. Countryside Crusher — puts a +1/+1 counter on itself

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

a land enters the battlefield — 1,560 cards in the game can cause this (Mountain Valley is one).

When a Mountain or Forest enters thanks to Mountain Valley:

1. Thranduil, Sindarin Liege // Silvan Rally — makes a token
2. Tato Farmer — puts 2 counters on a permanent
3. Primeval Bounty — gains you 3 life
4. Toph, Earthbending Master — puts a counter on a permanent
5. Dancing from Dark to Dawn — makes a token
6. Emeria Shepherd — brings a card back
7. Quest for the Necropolis — puts a quest counter on itself
8. Soul Stair Expedition — puts a quest counter on itself
9. Nissa of Shadowed Boughs — puts counters on a permanent
10. Choco, Seeker of Paradise — gets +1/+0

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

anything is sacrificed — 3,450 cards in the game can cause this (Mountain Valley is one).

1. Gorbag of Minas Morgul — When you sacrifice Mountain Valley, Gorbag of Minas Morgul triggers

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

a permanent is put into a graveyard from the battlefield — 5,057 cards in the game can cause this (Mountain Valley is one).

1. Long Feng, Grand Secretariat — When Mountain Valley dies, Long Feng, Grand Secretariat puts a counter on a creature

5 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 (Mountain Valley is one).

1. Gale, Waterdeep Prodigy — When Mountain Valley is in the graveyard, Gale, Waterdeep Prodigy can bring it back
2. Transplant Theorist — When Mountain Valley is in the graveyard, Transplant Theorist can bring it back
3. Heart-Shaped Herb — When Mountain Valley is in the graveyard, Heart-Shaped Herb can bring it back
4. Wayward Angel — Mountain Valley fills your graveyard toward the 7 or more cards Wayward Angel needs
5. Victimize — When Mountain Valley is in the graveyard, Victimize can bring it back
6. Bound // Determined — When Mountain Valley is in the graveyard, Bound // Determined can bring it back
7. Enlightened Confidant — When Mountain Valley is in the graveyard, Enlightened Confidant can bring it back
8. Tergrid, God of Fright // Tergrid's Lantern — When Mountain Valley is in the graveyard, Tergrid, God of Fright // Tergrid's Lantern can bring it back
9. Aerith, Last Ancient — When Mountain Valley is in the graveyard, Aerith, Last Ancient can bring it back
10. Sivriss, Nightmare Speaker — When Mountain Valley is in the graveyard, Sivriss, Nightmare Speaker can bring it back

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