Possible Clues:

• Gift for popping the question
• Promising band put on prior to match
• Commitment on hand with battle arena
• Offering given with a merger bid
• Token of partnership in place of fighting, after battle
• A promising band
• Love band in arena
• He proposes to put it on a lady's finger
• Band to be joined by another at the match
• A sign of commitment to the battle call?