1 Level 5 or higher EARTH monster + 1 Rock monster
If this card is Fusion Summoned: You can Special Summon 1 Rock monster from your hand or GY, except "Flux Ochsenfeld". (Quick Effect): You can target 1 EARTH monster you control and 1 card your opponent controls; return them to the hand. You can only use each effect of "Flux Ochsenfeld" once per turn, and cannot activate more than 1 in the same Chain.