Use "Damage = Reptile" to Special Summon this card. To make this easier to do, equip "Raregold Armor" to a monster on your field with 0 ATK, and when your opponent's strongest monster (ATK must be 2800 or higher) destroys that Attack-Position monster, this card will be Special Summoned.
If you have "Yubel" out when this card is destroyed other by its own "No Field Spell" rule, then you can Special Summon "Yubel - Terror Incarnate" when the field is cleared.
This can be a backup ace card in an Alien or Venom Deck.
If this is used in an Alien Deck, you can use certain cards to gain control of the opponents monsters with "A-Counters" and use those monsters as tributes to play "Earthbound Immortal Ccarayhua".
Use "Des Counterblow" to destroy this card after the attack and clear all the cards on the field.
Use "Viper's Rebirth" to special summon this card and clear the field at the end of the turn.
Use this card in Fire King decks and combo it with "Fire King Avatar Yaksha's" effect. Whenever "Yaksha" is destroyed and sent to the Graveyard, you can destroy 1 card you control or in your hand. Destroy the "Earthbound Immortal Ccarayhua" which you should keep in your hand only for "Yaksha's" effect, then you'll trigger "Ccarayhua's" effect to destroy all cards on the field. This combo is powerful enough to stop a OTK such as Six Samurai, Chaos Dragon, etc.