Excavate the top cards of your Deck until you have excavated a "GMX" monster and a Dinosaur monster, lose 400 LP for each excavated card, then you can Fusion Summon 1 "GMX" Fusion Monster from your Extra Deck, using any excavated monsters as material, also shuffle the rest into the Deck. You can only activate 1 "GMX Applied Experiment #55" per turn.