Warden of the Beyond — ruling 1

Warden of the Beyond can't get more than +2/+2 from its last ability, no matter how many opponents own a card in exile or how many exiled cards they own.

Warden of the Beyond : règles, fonctionnement et interactions (MTG)

Warden of the Beyond 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 (Attacking doesn't cause this creature to tap.) This creature gets +2/+2 as long as an opponent owns a card in exile.

How it works : Warden of the Beyond

Original English text — Wizards of the Coast / Scryfall

#1July 18, 2014· Wizards of the Coast
Warden of the Beyond can't get more than +2/+2 from its last ability, no matter how many opponents own a card in exile or how many exiled cards they own.
No other card is named in this ruling.