Shadow Urchin — ruling 1

If you can't place -1/-1 counters on any creatures you control (probably because you control no creatures), you can't choose to blight.

Shadow Urchin — ruling 2

All of the -1/-1 counters must be put on a single creature. You can't choose to split them up between multiple creatures.

Shadow Urchin — ruling 3

If a creature has +1/+1 counters and -1/-1 counters on it, state-based actions remove the same number of each so that it has only one kind of those counters on it. For example, if a creature has three +1/+1 counters on it and two -1/-1 counters are put on it, state-based actions will remove two of each of those kinds of counters, leaving the creature with just one +1/+1 counter.

Shadow Urchin — ruling 4

If a creature that has +1/+1 counters on it receives enough -1/-1 counters to cause it to be destroyed by lethal damage or put into its owner's graveyard for having 0 or less toughness, effects that refer to the counters on that creature when it died will see all of those +1/+1 and -1/-1 counters.

Shadow Urchin — ruling 5

The creature you choose to put -1/-1 counters on doesn't have to have enough toughness to survive the process. For example, if you blight 2, you can choose to put the counters on a 1/1 creature you control.

Shadow Urchin — ruling 6

You pay all costs and follow all timing rules for cards played this way. For example, if an exiled card is a land card, you may play it only during your main phase while the stack is empty.

Shadow Urchin — ruling 7

Once you've announced that you're casting a spell or activating an ability, players can't take actions until you've finished doing so. Notably, opponents can't try to destroy or otherwise remove your creatures to stop you from blighting as part of paying the cost of that spell or ability.

Shadow Urchin : règles, fonctionnement et interactions (MTG)

Shadow Urchin 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

Whenever this creature attacks, blight 1. (Put a -1/-1 counter on a creature you control.) Whenever a creature you control with one or more counters on it dies, exile that many cards from the top of your library. Until your next end step, you may play those cards.

How it works : Shadow Urchin

Original English text — Wizards of the Coast / Scryfall

#1November 17, 2025· Wizards of the Coast
If you can't place -1/-1 counters on any creatures you control (probably because you control no creatures), you can't choose to blight.
No other card is named in this ruling.
#2November 17, 2025· Wizards of the Coast
All of the -1/-1 counters must be put on a single creature. You can't choose to split them up between multiple creatures.
No other card is named in this ruling.
#3November 17, 2025· Wizards of the Coast
If a creature has +1/+1 counters and -1/-1 counters on it, state-based actions remove the same number of each so that it has only one kind of those counters on it. For example, if a creature has three +1/+1 counters on it and two -1/-1 counters are put on it, state-based actions will remove two of each of those kinds of counters, leaving the creature with just one +1/+1 counter.
No other card is named in this ruling.
#4November 17, 2025· Wizards of the Coast
If a creature that has +1/+1 counters on it receives enough -1/-1 counters to cause it to be destroyed by lethal damage or put into its owner's graveyard for having 0 or less toughness, effects that refer to the counters on that creature when it died will see all of those +1/+1 and -1/-1 counters.
No other card is named in this ruling.
#5November 17, 2025· Wizards of the Coast
The creature you choose to put -1/-1 counters on doesn't have to have enough toughness to survive the process. For example, if you blight 2, you can choose to put the counters on a 1/1 creature you control.
No other card is named in this ruling.
#6November 17, 2025· Wizards of the Coast
You pay all costs and follow all timing rules for cards played this way. For example, if an exiled card is a land card, you may play it only during your main phase while the stack is empty.
No other card is named in this ruling.
#7November 17, 2025· Wizards of the Coast
Once you've announced that you're casting a spell or activating an ability, players can't take actions until you've finished doing so. Notably, opponents can't try to destroy or otherwise remove your creatures to stop you from blighting as part of paying the cost of that spell or ability.
No other card is named in this ruling.