Forbidden Cyber Style Technique (SGX1-ENS07) - Speed Duel GX: Duel Academy Box 1st Edition

Activate this Skill once per Duel, if your LP are 1500 or less and you control no monsters. Reduce your LP to 50, then Special Summon up to 3 Machine "Cyber" monsters from your hand, Deck, and/or GY. They each become "Cyber Dragon" (Machine/LIGHT/Level 5/ATK 2100/DEF 1600), and cannot be Tributed. For the rest of this turn, you cannot Summon/Set except by Fusion Summoning, nor attack except with Fusion Monsters. Destroy any monsters Summoned by this Skill during your End Phase.