Forge of Heroes — ruling 1

If the target commander is somehow a creature and a planeswalker, most likely because it's Gideon, it receives both kinds of counters.

Forge of Heroes — ruling 2

If the target commander is somehow neither a creature nor a planeswalker (such as Arixmethes, Slumbering Isle may be), it receives no counters.

Forge of Heroes : règles, fonctionnement et interactions (MTG)

Forge of Heroes 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

: Add . : Choose target commander that entered this turn. Put a +1/+1 counter on it if it's a creature and a loyalty counter on it if it's a planeswalker.

How it works : Forge of Heroes

Original English text — Wizards of the Coast / Scryfall

#1July 13, 2018· Wizards of the Coast
If the target commander is somehow a creature and a planeswalker, most likely because it's Gideon, it receives both kinds of counters.
No other card is named in this ruling.
#2July 13, 2018· Wizards of the Coast
If the target commander is somehow neither a creature nor a planeswalker (such as Arixmethes, Slumbering Isle may be), it receives no counters.
No other card is named in this ruling.