REDU format ruling
Torrential Tribute

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)When a monster(s) is Summoned: Destroy all monsters on the field.
Rulings
- Like most Trap cards, this card can miss the timing. For example, if "Jar of Greed" was activated, and "Call of the Haunted" is chained to it, this card cannot be activated when that monster was Summoned, as the Summon was not the last thing to happen (Jar of Greed drawing a card was). You can read more about Timing here: https://www.mikamika.de/edison-rules
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.