REDU format ruling
Wall of Ivy

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)FLIP: Special Summon 1 "Ivy Token" (Plant-Type/EARTH/Level 1/ATK 0/DEF 0) in Defense Position to your opponent's side of the field. When this Token is destroyed, its controller takes 300 damage.
Rulings
source: Rulings_Tengu (Format Library) — nearest era to REDU (Sept 2011 vs Sept 2012); verify against period sources · 3 era-inappropriate line(s) removedRulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.