Commander Spock

a land enters the battlefield — 1,012 cards in Commander Spock's colors can cause this (Commander Spock is one).

When a land enters thanks to Commander Spock:

1. Primeval Bounty — gains you 3 life
2. Toph, Earthbending Master — puts a counter on a permanent
3. Dancing from Dark to Dawn — makes a token
4. Emeria Shepherd — brings a card back
5. Thranduil, Sindarin Liege // Silvan Rally — makes a token
6. Silvan Reveler — returns itself from the graveyard
7. Floral Evoker — puts a +1/+1 counter on itself
8. Choco, Seeker of Paradise — gets +1/+0
9. Mole Man, Moloid Master — makes a token
10. Return of the Mole Man — mills a card

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

a card is drawn — 2,369 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock makes a player draw a card:

1. Aether Syphon — mills a card
2. Diviner's Wand — gets +1/+1
3. Ominous Seas — puts a foreshadow counter on itself
4. Dream Trawler — gets +1/+0
5. Iron Man, Armored Avenger — puts a counter on a creature
6. The Astonishing Ant-Man — puts a +1/+1 counter on itself
7. Psychosis Crawler — makes each opponent lose 1 life
8. Lyla, Holographic Assistant — puts a counter on a creature
9. Data, New Life — puts a +1/+1 counter on itself
10. Chasm Skulker — puts a +1/+1 counter on itself

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

a Human enters the battlefield — 2,624 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock enters:

1. Heronblade Elite — puts a +1/+1 counter on itself
2. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
3. Thalia's Lieutenant — puts a +1/+1 counter on itself
4. Champion of the Parish — puts a +1/+1 counter on itself
5. Captain of the Mists — untaps itself
6. Beregond of the Guard — gives +1/+1
7. Dawnhart Disciple — gets +1/+1
8. Lossarnach Captain — taps a creature an opponent controls

a creature attacks — 9,882 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. Screaming Swarm — mills a card
4. Imperious Mindbreaker — mills a card
5. Staff of Titania — makes a token
6. Glory Bearers — gives +0/+1
7. Saw — sacrifices a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Super-Soldier Serum — triggers
10. Throwing Knife — sacrifices itself

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

anything attacks — 9,882 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Madame Web, Clairvoyant — mills a card
4. Apothecary White — makes a token
5. Bonny Pall, Clearcutter — draws you 1 card
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Dyadrine, Synthesis Amalgam — triggers
10. Ghalta and Mavren — triggers

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

a creature blocks — 9,882 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock blocks:

1. Barrow-Blade — strips abilities
2. Favor of the Woods — gains you 3 life
3. Gift of the Woods — gives +0/+3
4. Dead-Iron Sledge — kills a creature
5. Dwindle — kills a creature
6. Shield of the Righteous — triggers

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

a nontoken creature attacks — 9,882 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock attacks:

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

a creature enters the battlefield — 10,967 cards in Commander Spock's colors can cause this (Commander Spock is one).

When Commander Spock enters:

1. Ray Fillet, Wave Warrior — puts a counter on itself
2. Legolas Greenleaf — puts a counter on a permanent
3. Aetherstorm Roc — puts a counter on a permanent you control

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

anything enters the battlefield — 15,547 cards in Commander Spock's colors can cause this (Commander Spock is one).

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

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