Nettling Imp — ruling 1

If a turn has multiple combat phases, the ability can only be activated before the beginning of the declare attackers step of the first combat phase in that turn.

Nettling Imp — ruling 2

If the Imp leaves the battlefield before the end of the turn, the creature still is destroyed.

Nettling Imp — ruling 3

You can use this effect on a creature you know won’t be able to attack. For example, you can use it on a tapped creature.

Nettling Imp — ruling 4

The creature is destroyed if it does not attack because it simply can’t do so legally.

Nettling Imp : règles, fonctionnement et interactions (MTG)

Nettling Imp 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

: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only during an opponent's turn, before attackers are declared.

How it works : Nettling Imp

Original English text — Wizards of the Coast / Scryfall

#1September 20, 2013· Wizards of the Coast
If a turn has multiple combat phases, the ability can only be activated before the beginning of the declare attackers step of the first combat phase in that turn.
No other card is named in this ruling.
#2October 4, 2004· Wizards of the Coast
If the Imp leaves the battlefield before the end of the turn, the creature still is destroyed.
No other card is named in this ruling.
#3October 4, 2004· Wizards of the Coast
You can use this effect on a creature you know won’t be able to attack. For example, you can use it on a tapped creature.
No other card is named in this ruling.
#4October 4, 2004· Wizards of the Coast
The creature is destroyed if it does not attack because it simply can’t do so legally.
No other card is named in this ruling.