REDU format ruling
Second Goblin
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Once per turn, during your Main Phase, if you control this monster on the field, you can equip it to your "Giant Orc" as an Equip Spell Card, OR unequip the Union equipment and Special Summon this card in face-up Attack Position. While equipped to a monster by this card's effect, you can change the equipped monster's battle position once per turn. (1 monster can only be equipped with 1 Union Monster at a time. If the equipped monster is destroyed as a result of battle, destroy this card instead.)
Rulings
(1) Once per turn, you can equip this card to an Indomitable Fighter Lei Lei you control, OR unequip it to Special Summon this card in face-up Attack Position. (2) When equipped to a monster by this card's effect, you can change that monster's battle position once per turn. (C) (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed by battle, destroy this card instead.)
- The effect of changing a monster's Battle Position can only be used once per turn.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.