Seraph of the Sword — ruling 1

If Seraph of the Sword blocks a creature with trample, that creature’s controller must assign 3 damage to Seraph of the Sword (assuming it’s blocking no other creatures, there was no damage marked on it, and nothing has changed its toughness). The remainder can be assigned to the defending player or planeswalker.

Seraph of the Sword : règles, fonctionnement et interactions (MTG)

Seraph of the Sword 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

Flying Prevent all combat damage that would be dealt to this creature.

How it works : Seraph of the Sword

Original English text — Wizards of the Coast / Scryfall

#1July 1, 2013· Wizards of the Coast
If Seraph of the Sword blocks a creature with trample, that creature’s controller must assign 3 damage to Seraph of the Sword (assuming it’s blocking no other creatures, there was no damage marked on it, and nothing has changed its toughness). The remainder can be assigned to the defending player or planeswalker.
No other card is named in this ruling.