Spider-UK

a Spider creature it grants types to — 29 cards in Spider-UK's colors can cause this.

1. Spider-Suit — Spider-Suit gives Spider-UK an extra creature type

28 other cards cause it too. These are the ones with the most connections.

a Hero enters the battlefield — 97 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK enters:

1. Nighthawk, Dark Defender — gives +1/+1
2. Team Transmitter — gains you 1 life

life is gained — 741 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK gains life:

1. Cleric Class — puts a counter on a creature
2. Elenda's Hierophant — puts a +1/+1 counter on itself
3. Attended Healer — makes a token
4. Field-Tested Frying Pan — gets +X/+X, where X is the amount of life you gained
5. Vanguard Seraph — surveils
6. Nykthos Paragon — puts that many counters on a creature
7. Dawn of Hope — draws you 1 card
8. Ajani Resolute — puts a counter on a permanent
9. The Destined White Mage — puts a counter on a creature
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

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

a card is drawn — 612 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK makes a player draw a card:

1. Diviner's Wand — gets +1/+1
2. Psychosis Crawler — makes each opponent lose 1 life
3. Hoofprints of the Stag — puts a hoofprint counter on itself
4. Fasting — triggers
5. Moonring Mirror — exiles a card from your library

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

a Human enters the battlefield — 1,260 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK enters:

1. Thalia's Lieutenant — puts a +1/+1 counter on itself
2. Champion of the Parish — puts a +1/+1 counter on itself
3. Beregond of the Guard — gives +1/+1
4. Lossarnach Captain — taps a creature an opponent controls

a creature attacks — 3,562 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK attacks:

1. Adaptive Omnitool — searches a library
2. Staff of Titania — makes a token
3. Glory Bearers — gives +0/+1
4. Ancestor Dragon — gains you life
5. Patron of the Kitsune — gains you 1 life
6. Inquisitorial Rosette — makes a token
7. Saw — sacrifices a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Super-Soldier Serum — triggers
10. Throwing Knife — sacrifices itself

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

anything attacks — 3,562 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Apothecary White — makes a token
4. Adeline, Resplendent Cathar — makes a token
5. Dalkovan Encampment — makes 2 tokens
6. Salvation Colossus — gives +2/+2
7. Lionheart Glimmer — gives +1/+1
8. Urdnan, Dromoka Warrior — grants double strike and first strike
9. Guide of Souls — triggers
10. Warren Warleader — triggers

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

a creature blocks — 3,562 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK blocks:

1. Barrow-Blade — strips abilities
2. Noble Stand — gains you 2 life
3. Battle Cry — gives +0/+1
4. Dead-Iron Sledge — kills a creature

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

a nontoken creature attacks — 3,562 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK attacks:

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

a creature deals combat damage — 3,562 cards in Spider-UK's colors can cause this (Spider-UK is one).

1. Antagonist Incorporator — When Spider-UK deals combat damage, Antagonist Incorporator makes a token

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

a creature is cast — 3,572 cards in Spider-UK's colors can cause this (Spider-UK is one).

When Spider-UK is cast:

1. God-Eternal Oketra — makes a token
2. Oketra's Monument — makes a token
3. Quest for the Holy Relic — puts a quest counter on itself
4. Bontu's Monument — makes each opponent lose 1 life
5. Vanquisher's Banner — draws you 1 card
6. Oltec Matterweaver — triggers
7. Pure Reflection — kills a Reflection
8. Flickering Hound — flickers a creature you control
9. Hazoret's Monument — draws and discards
10. Kefnet's Monument — triggers

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

a creature enters the battlefield — 4,091 cards in Spider-UK's colors can cause this (Spider-UK is one).

1. Aetherstorm Roc — When Spider-UK enters, Aetherstorm Roc puts a counter on a permanent you control

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

anything enters the battlefield — 6,738 cards in Spider-UK's colors can cause this (Spider-UK is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Spider-UK enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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