The Panzer Unit is a Weiß Schwarz card from Attack On Titan: Final Season AOT/SX04-094. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have a character with "Pieck" or "Cart Titan" in its card name, this card cannot be played from your hand. Search your deck for up to 2 cost 0 or lower 《Military》 characters, put them on separate positions of your stage, shuffle your deck, and those characters get +1000 power until end of turn.