Forbidden Cyber Style Technique (SGX1-ENS07) [Speed Duel GX: Duel Academy Box]

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.