Spider-UK is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Web-slinging(You may cast this spell for
if you also return a tapped creature you control to its owner's hand.) At the beginning of your end step, if two or more creatures entered the battlefield under your control this turn, you draw a card and gain 2 life.
Complete guide
Spider-UK is a versatile Legendary Creature that rewards players for building a wide board and utilizing the new Web-slinging mechanic. By returning a tapped ally to your hand, you can cast this Spider Human Hero at a discount and set up powerful enter-the-battlefield loops. Its end-step ability ensures your hand stays full and your life total stays high as long as you keep your recruitment pace up.
Understanding Web-slinging
Web-slinging represents an alternative cost you may pay to cast Spider-UK. Instead of its normal mana cost, you pay {2}{W} and return a tapped creature you control to its owner's hand. This creature must be tapped at the moment you pay the costs; however, you can use a mana ability of a creature to tap it for the mana portion of the cost, and then immediately return that same creature to satisfy the bounce requirement.
Step-by-Step Resolution
When casting Spider-UK via Web-slinging, first announce you are casting the spell and choosing the alternative cost. Next, determine the total cost, which includes the reduced mana and the additional action of returning a tapped creature. Once the costs are paid, Spider-UK is put onto the stack. If any abilities trigger when the returned creature leaves the battlefield, those triggers go on the stack above Spider-UK and resolve first. Finally, Spider-UK itself resolves and enters the battlefield.
Maximizing the End Step Trigger
To trigger Spider-UK's draw and life gain ability, at least two creatures must have entered the battlefield under your control during the turn. This includes Spider-UK itself if it entered this turn. The ability checks this condition at the beginning of your end step; if the condition isn't met at that exact moment, the ability will not trigger at all. If it does trigger, you gain 2 life and draw a card upon resolution.
Common Mistakes to Avoid
Remember that Web-slinging is an alternative cost, not an additional cost. You cannot combine it with other alternative costs, such as casting a spell 'without paying its mana cost.' Additionally, Web-slinging does not change when you can cast the spell; you must still follow normal timing rules, meaning you can typically only cast Spider-UK during your main phase while the stack is empty unless you have an effect providing Flash.
Interaction examples
You have Solemn Simulacrum on the battlefield from a previous turn. You attack with it, making it tapped. In your post-combat main phase, you cast Spider-UK for its Web-slinging cost, returning the tapped Solemn Simulacrum to your hand. You then cast the Simulacrum again. Since two creatures (Spider-UK and the Simulacrum) entered the battlefield this turn, Spider-UK's ability triggers at the end step, giving you a card and life on top of the land you fetched.
With Roaming Throne on the battlefield naming 'Spider', you cast Spider-UK and another small creature. At the beginning of your end step, Spider-UK's ability triggers because two creatures entered. Because Roaming Throne is a Spider (the chosen type) and sees another Spider's ability trigger, it causes Spider-UK to trigger an additional time. You will draw two cards and gain 4 life total.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Spider-UK
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Web-slinging represents an alternative cost. If another effect allows you to play a card for a different alternative cost, including "without paying its mana cost," you can't also choose to pay its web-slinging cost. If any additional costs from other sources are applied, you must pay those.
No other card is named in this ruling.
- #2· Wizards of the Coast
If any permanent has an ability that triggers when the permanent you return leaves the battlefield, that ability will be put on the stack after you finish casting the spell, and it will resolve before that spell.
No other card is named in this ruling.
- #3· Wizards of the Coast
You must follow all normal timing rules when casting a spell with web-slinging. For creatures, that usually means you must cast it during a main phase of your turn while the stack is empty.
No other card is named in this ruling.
- #4· Wizards of the Coast
The creature you return must be tapped at the time you pay costs, but doesn't necessarily need to be tapped before you start casting the spell. For example, if you tap a creature with a mana ability to pay part of the spell's web-slinging cost, you could also return that creature to your hand to pay the cost.
No other card is named in this ruling.
Legal formats
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Meta decks with Spider-UK
No archived Top 8 deck with this card yet.



Solemn Simulacrum
Roaming Throne