Jurrac Guaiba [BATT-EN019] Starfoil Rare ARC061-C If they don't

If they don't

Set: Arcane Rising Edition: 1st Edition Finish: Rainbow Foil Type: Action Subtype: Attack Rarity: Common Class: Generic Cost: 2 Power: 6 If Rifting hits

You can only activate 1 "Bond Between Teacher and Student" per turn

Set: 2006 Collectors Tin Card type: Effect Monster Rarity: Secret Rare Attack: 2100 Defense: 1600 If there is a monster on your opponent's side of the field and there are no monsters on your side of the field

Typically a player would only do this if they did not have enough legally playable cards to make a 30 card minimum deck

Jurrac Guaiba [BATT-EN019] Starfoil Rare ARC061-C If they don'tSet: Battle Pack Tournament Prize Cards Card type: Effect Monster Rarity: Starfoil Rare Attack: 1700 Defense: 400 If this card destroys an opponent's monster by battle: You can Special Summon 1 "Jurrac" monster with 1700 or less ATK from your Deck, but it cannot declare an attack this turn.