Oath of Companionship is a Rare Trap Card card from Yu-Gi-Oh! (Legacy of the Valiant, LVAL). Current market price: $0.10.
Rare
Legacy of the Valiant (LVAL)
Card Text
If you control no monsters that were Special Summoned from the Extra Deck: Target 1 face-up monster your opponent controls that was Special Summoned from the Extra Deck; take control of it until the End Phase. You cannot Special Summon during the turn you activate this card.
