Send 1 monster on your side of the field to the Graveyard. Select 1 monster on your side of the field. The selected monster gains ATK equal to the ATK of the sent monster until the end of this turn.
Rulings
Individual Card FAQs
"Gift of the Martyr" increases the monster's ATK by the original ATK of the monster sent to the Graveyard.
Sending a monster to the Graveyard is a cost for "Gift of the Martyr". This is an effect that targets.
You can send a face-down monster to the Graveyard as the cost of "Gift of the Martyr". Refer to the original ATK of the monster.
Spell|
Normal