REDU format ruling
Yellow Baboon, Archer of the Forest

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)When a Beast-Type monster you control is destroyed by battle and sent to the Graveyard, you can remove from play 2 Beast-Type monsters in your Graveyard to Special Summon this card from your hand.
Rulings
- You can only activate 1 Trigger Effect in your hand per chain. (You can't activate the ① effect of this card more that once per chain, even if you have multiple copies in your hand).
- If the destroyed monster was not sent to the GY, this effect cannot be activated.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.