Ulvenwald Observer

hits creature — 2,298 cards in the game can cause this (Ulvenwald Observer is one).

1. Jalira, Master Polymorphist — Jalira, Master Polymorphist can put Ulvenwald Observer onto the battlefield from your library
2. Kethek, Crucible Goliath — Kethek, Crucible Goliath can put Ulvenwald Observer onto the battlefield from your library
3. Polymorph — Polymorph can put Ulvenwald Observer onto the battlefield from your library
4. Birthing Ritual — Birthing Ritual can put Ulvenwald Observer onto the battlefield from your library
5. Industrial Advancement — Industrial Advancement can put Ulvenwald Observer onto the battlefield from your library
6. Killer Instinct — Killer Instinct can put Ulvenwald Observer onto the battlefield from your library
7. Arthur, Marigold Knight — Arthur, Marigold Knight can put Ulvenwald Observer onto the battlefield from your library
8. Proteus Staff — Proteus Staff can put Ulvenwald Observer onto the battlefield from your library
9. Synthetic Destiny — Synthetic Destiny can put Ulvenwald Observer onto the battlefield from your library
10. Divergent Transformations — Divergent Transformations can put Ulvenwald Observer onto the battlefield from your library

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

a Treefolk attacks — 165 cards in the game can cause this (Ulvenwald Observer is one).

1. Fangorn, Tree Shepherd — When Ulvenwald Observer attacks, Fangorn, Tree Shepherd adds that much mana

a Treefolk creature enters the battlefield — 172 cards in the game can cause this (Ulvenwald Observer is one).

1. Orchard Warden — When Ulvenwald Observer enters, Orchard Warden gains you that creature's toughness life

a Treefolk enters the battlefield — 174 cards in the game can cause this (Ulvenwald Observer is one).

1. Quickbeam, Upstart Ent — When Ulvenwald Observer enters, Quickbeam, Upstart Ent gives +2/+2

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

When Ulvenwald Observer makes a player draw a card:

1. Temmet, Naktamun's Will — gives +1/+1
2. Niv-Mizzet, Parun — deals 1 damage
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.

anything attacks — 17,934 cards in the game can cause this (Ulvenwald Observer is one).

When Ulvenwald Observer attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Grim Javelineer — gives +1/+0
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers
6. Campsite Cuisine — sacrifices a Food
7. Gossip's Talent — triggers
8. Banon, the Returners' Leader — draws and discards
9. Toph, Earthbending Master — puts a counter on a permanent
10. Three Dog, Galaxy News DJ — sacrifices an Aura

113 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 (Ulvenwald Observer is one).

When Ulvenwald Observer attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Jolene, Plundering Pugilist — makes a token
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

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

a creature blocks — 17,934 cards in the game can cause this (Ulvenwald Observer is one).

When Ulvenwald Observer blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Tide of War — sacrifices a creature
5. Dead-Iron Sledge — kills a creature
6. Dwindle — kills a creature
7. Shield of the Righteous — triggers

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Ulvenwald Observer is one).

When Ulvenwald Observer attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token
3. Militia's Pride — makes a token

a creature enters the battlefield — 19,800 cards in the game can cause this (Ulvenwald Observer is one).

When Ulvenwald Observer enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

302 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 (Ulvenwald Observer is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Ulvenwald Observer enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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