Ward of Piety — ruling 1

Redirected damage retains its information. For example, your opponent attacks you with Slith Firewalker (which reads, in part, “Whenever Slith Firewalker deals combat damage to a player, put a +1/+1 counter on it.”) and you block with a creature enchanted with Ward of Piety. If you activate Ward of Piety, targeting your opponent, the Slith’s ability triggers during the combat damage step and it gets a +1/+1 counter. It’s still combat damage.

Ward of Piety : règles, fonctionnement et interactions (MTG)

Ward of Piety 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

Enchant creature : The next 1 damage that would be dealt to enchanted creature this turn is dealt to any target instead.

How it works : Ward of Piety

Original English text — Wizards of the Coast / Scryfall

#1February 1, 2005· Wizards of the Coast
Redirected damage retains its information. For example, your opponent attacks you with Slith Firewalker (which reads, in part, “Whenever Slith Firewalker deals combat damage to a player, put a +1/+1 counter on it.”) and you block with a creature enchanted with Ward of Piety. If you activate Ward of Piety, targeting your opponent, the Slith’s ability triggers during the combat damage step and it gets a +1/+1 counter. It’s still combat damage.
No other card is named in this ruling.