The basic strategy of this deck is to use cards like Dragon Shrine, Trade-In, and Foolish Burial to send Tri-Horned Dragon and other high-level dragons to the graveyard, and then revive them with cards like Return of the Dragon Lords, Silver’s Cry, and Call of the Haunted. You can also use The White Stone of Ancients and The White Stone of Legend to search for Blue-Eyes White Dragon and its variants, which can help you summon powerful synchro and xyz monsters. Dragon Core Hexer is a level 8 tuner that can be used to synchro summon Giganticastle, a level 9 monster with 3100 ATK that can beat Tri-Horned Dragon in a battle. Skill Drain is a trap card that can negate the effects of all face-up monsters on the field, which can give Tri-Horned Dragon an advantage over most monsters.