Yu-Gi-Oh! GX Duel Academy Puzzle: 078


 * Ram Mystic Tomato into Luster Dragon to summon Sangan from your deck.
 * Tribute Sangan with the Catapult Turtle, take Z-Metal Tank to your hand.
 * Normal summon Z-Metal Tank, then Special summon XZ-Tank Cannon from your extra deck.
 * Catapult the Tank Cannon and then Catapult turtle.