Swathcutter Giant — ruling 1

If a creature attacks a planeswalker, that planeswalker’s controller is the defending player.

Swathcutter Giant — ruling 2

In a Two-Headed Giant game, Swathcutter Giant deals 1 damage to each creature controlled by the player it’s attacking. The other player’s creatures are unaffected.

Swathcutter Giant : règles, fonctionnement et interactions (MTG)

Swathcutter Giant 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 Whenever this creature attacks, it deals 1 damage to each creature defending player controls.

How it works : Swathcutter Giant

Original English text — Wizards of the Coast / Scryfall

#1October 5, 2018· Wizards of the Coast
If a creature attacks a planeswalker, that planeswalker’s controller is the defending player.
No other card is named in this ruling.
#2October 5, 2018· Wizards of the Coast
In a Two-Headed Giant game, Swathcutter Giant deals 1 damage to each creature controlled by the player it’s attacking. The other player’s creatures are unaffected.
No other card is named in this ruling.