Star Siphon (STBL-EN069) - Starstrike Blast 1st Edition

Activate only when a Synchro Monster is Special Summoned, by selecting it. Special Summon 1 Siphon Token (Spellcaster-Type/DARK/Level 1/ATK 0/DEF 0). Its Level is that of the selected monster, and the selected monster is now Level 1.