Dekoichi the Battlechanted Locomotive [DR3-EN092] Rare Power of the Duelist those cards have -1 Armor

those cards have -1 Armor while defending

Set: Black & White: Base Set Type: Grass Rarity: Uncommon Retreat cost: Colorless

Set: Flaming Eternity Card type: Effect Monster Rarity: Ultimate Rare Attack: 2300 Defense: 900 If this card was Special Summoned by the effect of Ultimate Insect LV3

Set: Promo Finish: Cold Foil - Golden Type: Equipment Subtype: Arms Rarity: Promo Class: Lightning Instant - [2 Resource]: The next time an attack action card you control hits a hero this turn

Dekoichi the Battlechanted Locomotive [DR3-EN092] Rare Power of the Duelist those cards have -1 ArmorSet: Dark Revelation Volume 3 Card type: Effect Monster Rarity: Rare Attack: 1400 Defense: 1000 FLIP: Draw 1 card. If you have face up "Bokoichi, the Freightening Car" card(s) on your side of the field, draw an additional card for each of them.