TRIBUTE SUMMON: A cost 3 or more —> Trash After paying the traditional Summoning Core Cost, you must move all the Cores of a Spirit that meets these aspects to the location specified in order to Summon this Spirit. During Your Opponent's Attack Phase (Lv. 1-2-3): Once his/her Attack Phase starts, choose an opposing target Spirit; if it's able to attack, that Spirit must attack immediately. When in Battle (Lv. 2-3): Return one opposing non-Tribute-Summon Spirit to your opponent's hand.