Arcades, the Strategist [Core Set 2019 Prerelease Promos] SM189 you can add 1 Machina

you can add 1 Machina monster (except Machina Gearframe) from your Deck

You can target 1 EARTH monster in your opponent's GY

You can only use this effect of "Marincess Sea Horse" once per turn

After this card is Fusion Summoned

Arcades, the Strategist [Core Set 2019 Prerelease Promos] SM189 you can add 1 MachinaSet: Core Set 2019 Prerelease Promos Type: Legendary Creature Elder Dragon Rarity: Mythic Cost: {1}{G}{W}{U} Flying, vigilance Whenever a creature with defender enters the battlefield under your control, draw a card. Each creature you control with defender assigns combat damage equal to its toughness rather than its power and can attack as though it didn't have defender.