Rith, Liberated Primeval — ruling 1

If a permanent has more than one ward ability, the abilities trigger individually. The spell or ability will be countered if either of the ward costs aren’t paid.

Rith, Liberated Primeval — ruling 2

A creature has been dealt excess damage if one or more sources dealt more damage to it than the minimum amount of damage required to be lethal damage. In most cases, this means damage greater than its toughness, but consider the damage already dealt to it that turn.

Rith, Liberated Primeval — ruling 3

A planeswalker is dealt excess damage if it’s dealt damage greater than its current loyalty.

Rith, Liberated Primeval — ruling 4

Even 1 damage dealt to a creature from a source with deathtouch is considered lethal damage, so any amount greater than that will cause excess damage to be dealt, even if the total amount of damage isn’t greater than the creature’s toughness. Note that a source of damage having deathtouch has no effect on damage dealt to planeswalkers.

Rith, Liberated Primeval — ruling 5

It doesn’t matter whether a creature, spell, or ability you control deals the excess damage, only that excess damage was dealt at some point during the turn. For example, if a 4/4 creature an opponent controls is dealt 2 damage by a spell you control and later that turn is dealt 3 damage by a spell another player controls, Rith’s ability will trigger.

Rith, Liberated Primeval — ruling 6

Rith’s ability will trigger as long as an opponent controlled the creature as excess damage was dealt to it, even if the creature is no longer on the battlefield or you control it at the end of the turn.

Rith, Liberated Primeval : règles, fonctionnement et interactions (MTG)

Rith, Liberated Primeval 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, ward Other Dragons you control have ward . At the beginning of your end step, if a creature or planeswalker an opponent controlled was dealt excess damage this turn, create a 4/4 red Dragon creature token with flying.

How it works : Rith, Liberated Primeval

Original English text — Wizards of the Coast / Scryfall

#1September 9, 2022· Wizards of the Coast
If a permanent has more than one ward ability, the abilities trigger individually. The spell or ability will be countered if either of the ward costs aren’t paid.
No other card is named in this ruling.
#2September 9, 2022· Wizards of the Coast
A creature has been dealt excess damage if one or more sources dealt more damage to it than the minimum amount of damage required to be lethal damage. In most cases, this means damage greater than its toughness, but consider the damage already dealt to it that turn.
No other card is named in this ruling.
#3September 9, 2022· Wizards of the Coast
A planeswalker is dealt excess damage if it’s dealt damage greater than its current loyalty.
No other card is named in this ruling.
#4September 9, 2022· Wizards of the Coast
Even 1 damage dealt to a creature from a source with deathtouch is considered lethal damage, so any amount greater than that will cause excess damage to be dealt, even if the total amount of damage isn’t greater than the creature’s toughness. Note that a source of damage having deathtouch has no effect on damage dealt to planeswalkers.
No other card is named in this ruling.
#5September 9, 2022· Wizards of the Coast
It doesn’t matter whether a creature, spell, or ability you control deals the excess damage, only that excess damage was dealt at some point during the turn. For example, if a 4/4 creature an opponent controls is dealt 2 damage by a spell you control and later that turn is dealt 3 damage by a spell another player controls, Rith’s ability will trigger.
No other card is named in this ruling.
#6September 9, 2022· Wizards of the Coast
Rith’s ability will trigger as long as an opponent controlled the creature as excess damage was dealt to it, even if the creature is no longer on the battlefield or you control it at the end of the turn.
No other card is named in this ruling.