You pick this up on your Lv.5 turn. Butenmon is standing on the Kotemon line, Toya Kuga is down, and Giant Slayer hit the table last turn: 12 was a real price, and its Blocker plus the leave-replacement below is what you bought. Two spare Musyamon sit in the trash as Toya fuel, next to the usual early-game debris. Their side is two Digimon, the bigger one at 12000 DP or less, and they are up 5 security to your 4.