Cheapest priced copy (Final Fantasy Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Gau, Feral Youth 
Legendary Creature — Human Berserker · 2/2 · Rare · Final Fantasy Commander · #55
Rage — Whenever Gau attacks, put a +1/+1 counter on it.
At the beginning of each end step, if a card left your graveyard this turn, Gau deals damage equal to its power to each opponent.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy Commander | 55 | Rare | $0.49 | $0.49 |
| Final Fantasy Commander | 152 | Rare | $0.99 | $3.99 |
2 rulings from Wizards of the Coast
- 6 June 2025If Gau is no longer on the battlefield when its last ability resolves, use its power as it last existed on the battlefield to determine how much damage the ability deals.
- 6 June 2025Gau's last ability checks at the moment it would trigger to see if a card left your graveyard this turn. If none did, the ability won't trigger at all. Once your end step begins, it's too late to make a card leave your graveyard in order to cause this ability to trigger.