Guild Feud — ruling 1

Guild Feud has one target: the opponent. You'll see what creature that player puts onto the battlefield before revealing the top three cards of your library and deciding whether to put a creature onto the battlefield yourself.

Guild Feud — ruling 2

If no creatures or only one creature is put onto the battlefield this way, no fight happens.

Guild Feud — ruling 3

Players can't cast spells or activate abilities between the creatures being put onto the battlefield and them fighting each other. Notably, you can't respond with a spell like Giant Growth.

Guild Feud — ruling 4

Any abilities that trigger when the two creatures enter will be put on the stack after the fight, even if one or both creatures die.

Guild Feud : règles, fonctionnement et interactions (MTG)

Guild Feud 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

At the beginning of your upkeep, target opponent reveals the top three cards of their library, may put a creature card from among them onto the battlefield, then puts the rest into their graveyard. You do the same with the top three cards of your library. If two creatures are put onto the battlefield this way, those creatures fight each other.

How it works : Guild Feud

Original English text — Wizards of the Coast / Scryfall

#1October 1, 2012· Wizards of the Coast
Guild Feud has one target: the opponent. You'll see what creature that player puts onto the battlefield before revealing the top three cards of your library and deciding whether to put a creature onto the battlefield yourself.
No other card is named in this ruling.
#2October 1, 2012· Wizards of the Coast
If no creatures or only one creature is put onto the battlefield this way, no fight happens.
No other card is named in this ruling.
#3October 1, 2012· Wizards of the Coast
Players can't cast spells or activate abilities between the creatures being put onto the battlefield and them fighting each other. Notably, you can't respond with a spell like Giant Growth.
No other card is named in this ruling.
#4October 1, 2012· Wizards of the Coast
Any abilities that trigger when the two creatures enter will be put on the stack after the fight, even if one or both creatures die.
No other card is named in this ruling.