Undergrowth Champion — ruling 1

A landfall ability triggers whenever a land you control enters for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.

Undergrowth Champion — ruling 2

A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.

Undergrowth Champion — ruling 3

Whenever a land you control enters, each landfall ability of the permanents you control will trigger. You can put them on the stack in any order. The last ability you put on the stack will be the first one to resolve (As a result, you can have those abilities resolve in the order of your choosing.).

Undergrowth Champion — ruling 4

If Undergrowth Champion is dealt damage from multiple sources at the same time (for example, if it's blocked by multiple creatures), its prevention effect will apply once to all that damage. You'll remove only one +1/+1 counter.

Undergrowth Champion — ruling 5

If damage that can't be prevented is dealt to Undergrowth Champion while it has a +1/+1 counter on it, you'll still remove a +1/+1 counter on it.

Undergrowth Champion : règles, fonctionnement et interactions (MTG)

Undergrowth Champion 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

If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from this creature. Landfall — Whenever a land you control enters, put a +1/+1 counter on this creature.

How it works : Undergrowth Champion

Original English text — Wizards of the Coast / Scryfall

#1November 8, 2024· Wizards of the Coast
A landfall ability triggers whenever a land you control enters for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.
No other card is named in this ruling.
#2November 8, 2024· Wizards of the Coast
A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.
No other card is named in this ruling.
#3November 8, 2024· Wizards of the Coast
Whenever a land you control enters, each landfall ability of the permanents you control will trigger. You can put them on the stack in any order. The last ability you put on the stack will be the first one to resolve (As a result, you can have those abilities resolve in the order of your choosing.).
No other card is named in this ruling.
#4August 25, 2015· Wizards of the Coast
If Undergrowth Champion is dealt damage from multiple sources at the same time (for example, if it's blocked by multiple creatures), its prevention effect will apply once to all that damage. You'll remove only one +1/+1 counter.
No other card is named in this ruling.
#5August 25, 2015· Wizards of the Coast
If damage that can't be prevented is dealt to Undergrowth Champion while it has a +1/+1 counter on it, you'll still remove a +1/+1 counter on it.
No other card is named in this ruling.