Frondland Felidar — ruling 1

Frondland Felidar’s last ability applies to itself as long as it still has vigilance.

Frondland Felidar — ruling 2

You can activate the ability granted by Frondland Felidar after attacking but before blockers are chosen.

Frondland Felidar — ruling 3

Tapping an attacking creature doesn’t remove it from combat.

Frondland Felidar — ruling 4

Once you’ve activated the ability granted by Frondland Felidar, causing the creature to lose that ability (such as by removing Frondland Felidar from the battlefield) won’t affect the ability on the stack.

Frondland Felidar : règles, fonctionnement et interactions (MTG)

Frondland Felidar 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

Vigilance Creatures you control with vigilance have ", : Tap target creature."

How it works : Frondland Felidar

Original English text — Wizards of the Coast / Scryfall

#1April 17, 2020· Wizards of the Coast
Frondland Felidar’s last ability applies to itself as long as it still has vigilance.
No other card is named in this ruling.
#2April 17, 2020· Wizards of the Coast
You can activate the ability granted by Frondland Felidar after attacking but before blockers are chosen.
No other card is named in this ruling.
#3April 17, 2020· Wizards of the Coast
Tapping an attacking creature doesn’t remove it from combat.
No other card is named in this ruling.
#4April 17, 2020· Wizards of the Coast
Once you’ve activated the ability granted by Frondland Felidar, causing the creature to lose that ability (such as by removing Frondland Felidar from the battlefield) won’t affect the ability on the stack.
No other card is named in this ruling.