Jam Breeding Machine (LCJW-EN124) - Legendary Collection 4: Joey's World 1st Edition

During each of your Standby Phases, Special Summon 1 "Slime Token" (Aqua-Type/WATER/LEVEL 1/ATK 500/DEF 500) in Attack Position to your side of the field. As long as this card remains face-up on the field, you cannot Normal Summon, Flip Summon, or Special Summon any other monster (except Slime Tokens).