Steam Tamer, Arka (G-BT12/Re:02EN) [Dragon King's Awakening]

[CONT]: Sentinel [AUTO]:[Choose a "Zodiac Time Beast" from your hand, and discard it] When this unit is placed on (GC), you may pay the cost. If you do, choose one of your units that is being attacked, and that unit cannot be hit until end of that battle. [ACT](Drop Zone) Generation Break 2 :[Choose another "Steam Tamer, Arka" and a "Zodiac Time Beast" trigger unit from your drop zone, and bind them face up] Return this card to your hand.