Ugin, the Spirit Dragon

anything leaves the battlefield — 1 card in the game can cause this (Ugin is one).

1. Toothy, Imaginary Friend — When Toothy, Imaginary Friend leaves the battlefield thanks to Ugin, the Spirit Dragon, it draws you cards

a permanent is exiled — 69 cards in the game can cause this (Ugin is one).

1. Hero of Bretagard — When Ugin, the Spirit Dragon is exiled, Hero of Bretagard puts that many counters on a permanent

a nontoken permanent enters the battlefield — 142 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon enters:

1. Spot, Felis catus — makes a token
2. Arbaaz Mir — deals 1 damage
3. Cadric, Soul Kindler — makes a token

a permanent enters the battlefield — 152 cards in the game can cause this (Ugin is one).

1. Dawn-Blessed Pennant — When a permanent enters thanks to Ugin, the Spirit Dragon, Dawn-Blessed Pennant gains you 1 life
2. Jean-Luc Picard, Luminary — When Ugin, the Spirit Dragon enters, Jean-Luc Picard, Luminary draws you 1 card
3. Altar of the Brood — When a permanent enters thanks to Ugin, the Spirit Dragon, Altar of the Brood mills a card
4. Yoshimaru, Ever Faithful — When Ugin, the Spirit Dragon enters, Yoshimaru, Ever Faithful puts a +1/+1 counter on itself
5. Amareth, the Lustrous — When a permanent enters thanks to Ugin, the Spirit Dragon, Amareth, the Lustrous searches a library
6. Rimefire Torque — When a permanent enters thanks to Ugin, the Spirit Dragon, Rimefire Torque puts a charge counter on itself
7. Eye of Singularity — When a permanent enters thanks to Ugin, the Spirit Dragon, Eye of Singularity kills a permanent

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

a nontoken permanent leaves the battlefield — 313 cards in the game can cause this (Ugin is one).

1. Genku, Future Shaper — When Ugin, the Spirit Dragon leaves the battlefield, Genku, Future Shaper makes a token

a permanent leaves the battlefield — 315 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon leaves the battlefield:

1. Super Shredder — puts a +1/+1 counter on itself
2. Nefarious Imp — scries

a planeswalker is cast — 361 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon is cast:

1. Jaya's Phoenix — returns itself from the graveyard
2. Interplanar Beacon — gains you 1 life
3. Primeval Bounty — puts 3 counters on a creature
4. Tetsuko Umezawa, Pursuer — gets +1/+1
5. Thor, God of Thunder — deals that spell's mana value damage
6. Krile Baldesion — brings a card back
7. Summon: Good King Mog XII — makes a token
8. Kykar, Wind's Fury — makes a token
9. Tellah, Great Sage — makes a token
10. Blood Funnel — sacrifices a creature

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

a planeswalker enters the battlefield — 366 cards in the game can cause this (Ugin is one).

When a permanent enters thanks to Ugin, the Spirit Dragon:

1. Liliana the Repentant — mills a card
2. Liliana the Faultless — gains you 1 life
3. Builder's Talent — puts a counter on a creature
4. Brainstealer Dragon — makes a player lose life equal to its mana value
5. Cloudstone Curio — triggers

life is gained — 2,076 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

84 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 (Ugin is one).

1. The War Doctor — When Ugin, the Spirit Dragon is exiled, The War Doctor puts a time counter on itself

anything deals noncombat damage — 3,068 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon deals noncombat damage:

1. Quest for Pure Flame — puts a quest counter on itself
2. Fear of Burning Alive — deals that amount damage
3. Niv-Mizzet, Visionary — draws you that many cards
4. Chandra's Incinerator — deals that much damage
5. Chandra's Pyreling — gets +1/+0
6. Talon of Pain — puts a charge counter on itself
7. Asgardian Inspiration — returns itself from the graveyard
8. Thor, Guardian of Midgard — exiles a card from your library
9. Virtue of Courage // Embereth Blaze — exiles a card from your library

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

life is lost — 3,160 cards in the game can cause this (Ugin is one).

When Ugin, the Spirit Dragon makes a player lose life:

1. Far Fortune, End Boss — raises your speed
2. Zahur, Glory's Past — raises your speed
3. Mendicant Core, Guidelight — raises your speed
4. Aether Syphon — raises your speed
5. Vnwxt, Verbose Host — raises your speed
6. Embalmed Ascendant — raises your speed
7. Slick Imitator — raises your speed
8. Nesting Bot — raises your speed
9. Oath of Lim-Dûl — sacrifices an enchantment

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

anything enters the battlefield — 26,499 cards in the game can cause this (Ugin is one).

1. The Rollercrusher Ride — When The Rollercrusher Ride enters thanks to Ugin, the Spirit Dragon, it deals X damage

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