Bramblefort Fink — ruling 1

Whether you control an Oko planeswalker is checked only as you begin to activate Bramblefort Fink's ability. It doesn't matter if Oko leaves the battlefield before the ability resolves or later in the turn.

Bramblefort Fink — ruling 2

Any effects that modify Bramblefort Fink's power and/or toughness without setting them to a specific number or value will apply after its base power and toughness are set, regardless of the order in which those effects were created. The same is true of counters that modify its power and toughness.

Bramblefort Fink : règles, fonctionnement et interactions (MTG)

Bramblefort Fink 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

: This creature has base power and toughness 10/10 until end of turn. Activate only if you control an Oko planeswalker.

How it works : Bramblefort Fink

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2019· Wizards of the Coast
Whether you control an Oko planeswalker is checked only as you begin to activate Bramblefort Fink's ability. It doesn't matter if Oko leaves the battlefield before the ability resolves or later in the turn.
No other card is named in this ruling.
#2October 4, 2019· Wizards of the Coast
Any effects that modify Bramblefort Fink's power and/or toughness without setting them to a specific number or value will apply after its base power and toughness are set, regardless of the order in which those effects were created. The same is true of counters that modify its power and toughness.
No other card is named in this ruling.