Guardian Gladewalker

Mana cost: {1}{G}
Type: Creature — Shapeshifter
Power / toughness: 1 / 1
Set: The List #KHM-174 (common)
Price: $0.21 USD

Changeling (This card is every creature type.)
When this creature enters, put a +1/+1 counter on target creature.

Guardian Gladewalker has 2 printings, first in Kaldheim (2021). EDHREC ranks it #8,460 among Commander cards. It appears most in Ayula, Queen Among Bears decks (1,656 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Public decks that run Guardian Gladewalker

Everyone's Invited - Secret Lair Drop - WUBRG EDH Precon Decklist, led by Morophon, the Boundless

Commanders that run Guardian Gladewalker most

Deck counts from EDHREC.

Often played with Guardian Gladewalker

Cards that show up in the same decks on EDHREC.

Rulings

2021-02-05: If an effect causes a creature with changeling to lose all abilities, it will remain all creature types, even though it will no longer have changeling. This is because changeling applies before the effect that removes it.
2021-02-05: The subtype Shapeshifter that appears on the type line is mostly there to reinforce the flavor. A creature card with changeling is just as much an Elf, a Dwarf, a Sliver, a Goat, a Coward, and a Zombie as it is a Shapeshifter.
2021-02-05: If an effect causes a creature with changeling to become a new creature type, it will be only that new creature type. It will still have changeling; the effect making it all creature types will simply be overwritten.
2021-02-05: Changeling is a characteristic-defining ability. It functions in all zones, not only while a card that has it is on the battlefield.