Set: Structure Deck: Cyber Dragon Revolution
Card Number: SDCR-EN028
Card Text: Once per turn, when a Machine-Type monster is destroyed by battle and sent to your Graveyard: You can Special Summon 1 Machine-Type monster from your Deck that has the same Attribute and less ATK than that destroyed Machine-Type monster in the Graveyard.
Card Type: Continuous Spell Card
Name: Machina Armored Unit