When this card is Normal Summoned: You can Special Summon 1 "Gouki" monster from your hand. If this card is sent from the field to the GY: You can add 1 "Gouki" card from your Deck to your hand, except "Gouki Suprex". You can only use this effect of "Gouki Suprex" once per turn.
To use Gouki monsters’ search effect, you can send them to the graveyard by using them as tribute fodder and synchro material.
Suprex can Special summon high leveled Gouki monsters like Riscorpio and Bearhug. Particularly, you want to Special Summon Bearhug to trigger his effect. Twistcobra can be Special Summoned with Suprex and you can tribute either one with Twistcobra’s effect to get a significant ATK boost and get the search effect.
Gouki Iron Claw can be discarded for an ATK boost and immunity to enemy effects. Gouki Face Change is a good way to revive a Gouki monster while also getting a search effect. Gouki Cage Match can be used for good searching and field presence but is very slow to activate.