Goat format ruling
Second Goblin

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
- The effect of changing a monster's Battle Position can only be used once per turn.A "Giant Orc" equipped with "Second Goblin" may be changed to attack position after being changed to defense position through its effect, as long as "Second Goblin’s" effect has not been used.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.