Stoneforge Mystic (Toppers) [Double Masters] MHA-RLE02 P 4/7 you may choose one of

you may choose one of your cards named "After the Battle

if"Declaration of War" is in your climax area

[AUTO] When this card is placed on the stage from your hand or by the [AUTO] effect of a card named "Demon's Demeanor

and this card gets +500 power

Set: Sword & Shield: Chilling Reign Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

Stoneforge Mystic (Toppers) [Double Masters] MHA-RLE02 P 4/7 you may choose one ofSet: Double Masters Type: Creature Kor Artificer Rarity: Rare Cost: {1}{W} When Stoneforge Mystic enters the battlefield, you may search your library for an Equipment card, reveal it, put it into your hand, then shuffle. {1}{W}, {T}: You may put an Equipment card from your hand onto the battlefield.