Kapow!

Put a +1/+1 counter on target creature you control. It fights target creature an opponent controls. (Each deals damage equal to its power to the other.)

Flash Thompson, Spider-Fan

Flash
When Flash Thompson enters, choose one or both —
• Heckle — Tap target creature.
• Hero Worship — Untap target creature.

Suburban Sanctuary

This land enters tapped.
{T}: Add {G} or {W}.
{4}, {T}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Spider-Man, Web-Slinger

Web-slinging {W} (You may cast this spell for {W} if you also return a tapped creature you control to its owner's hand.)

Spider-Man, Brooklyn Visionary

Web-slinging {2}{G} (You may cast this spell for {2}{G} if you also return a tapped creature you control to its owner's hand.)
When Spider-Man enters, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Radioactive Spider

Reach, deathtouch
Fateful Bite — {2}, Sacrifice this creature: Search your library for a Spider Hero card, reveal it, put it into your hand, then shuffle. Activate only as a sorcery.

Daily Bugle Building

{T}: Add {C}.
{1}, {T}: Add one mana of any color.
Smear Campaign — {1}, {T}: Target legendary creature gains menace until end of turn. Activate only as a sorcery.

Scout the City

Choose one —
• Look Around — Mill three cards. You may put a permanent card from among them into your hand. You gain 3 life. (To mill three cards, put the top three cards of your library into your graveyard.)
• Bring Down — Destroy target creature with flying.

Web-Warriors

When this creature enters, put a +1/+1 counter on each other creature you control.

Spider-Rex, Daring Dino

Reach, trample
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

News Helicopter

Flying
When this creature enters, create a 1/1 green and white Human Citizen creature token.

Daily Bugle Reporters

When this creature enters, choose one —
• Puff Piece — Put a +1/+1 counter on each of up to two target creatures.
• Investigative Journalism — Return target creature card with mana value 2 or less from your graveyard to your hand.

City Pigeon

Flying
When this creature leaves the battlefield, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")

Guy in the Chair

{T}: Add one mana of any color.
Web Support — {2}{G}, {T}: Put a +1/+1 counter on target Spider. Activate only as a sorcery.

Spider-Bot

Reach
When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.

Spider-Slayer, Hatred Honed

Whenever Spider-Slayer deals damage to a Spider, destroy that creature.
{6}, Exile this card from your graveyard: Create two tapped 1/1 colorless Robot artifact creature tokens with flying.

Plains

Spectacular Spider-Man

Flash
{1}: Spectacular Spider-Man gains flying until end of turn.
{1}, Sacrifice Spectacular Spider-Man: Creatures you control gain hexproof and indestructible until end of turn.

Spider-Man India

Web-slinging {1}{G}{W} (You may cast this spell for {1}{G}{W} if you also return a tapped creature you control to its owner's hand.)
Pavitr's Sevā — Whenever you cast a creature spell, put a +1/+1 counter on target creature you control. It gains flying until end of turn.

Thwip!

Target creature gets +2/+2 and gains flying until end of turn. If it's a Spider, you gain 2 life.

Grow Extra Arms

This spell costs {1} less to cast if it targets a Spider.
Target creature gets +4/+4 until end of turn.

Kraven's Last Hunt

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Mill five cards. When you do, this Saga deals damage equal to the greatest power among creature cards in your graveyard to target creature.
II — Target creature you control gets +2/+2 until end of turn.
III — Return target creature card from your graveyard to your hand.

Sudden Strike

Destroy target attacking or blocking creature.

Wall Crawl

When this enchantment enters, create a 2/1 green Spider creature token with reach, then you gain 1 life for each Spider you control.
Spiders you control get +1/+1 and can't be blocked by creatures with defender.

Lurking Lizards

Trample
Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature.

Spider-Girl, Legacy Hero

During your turn, Spider-Girl has flying.
When Spider-Girl leaves the battlefield, create a 1/1 green and white Human Citizen creature token.