Chimecho (072/185) [Sword & Shield: Vivid Voltage] Legacy of the Valiant When an Efffect Monster effect

When an Efffect Monster effect is activated

plus 121 copies of something new and surprising—R&D Playtest cards you won't find anywhere outside of Mystery Booster: Convention Edition

you can add to your hand 1 Reptile-Type "Worm" monster from your Deck

Set: XY: Ancient Origins Type: Psychic Rarity: Promo Retreat cost: Colorless

Set: Structure Deck: Yugi Muto Card type: Effect Monster Rarity: Common Attack: 3500 Defense: 3850 Cannot be Normal Summoned/Set

Chimecho (072/185) [Sword & Shield: Vivid Voltage] Legacy of the Valiant When an Efffect Monster effectSet: Sword & Shield: Vivid Voltage Type: Psychic Rarity: Common Retreat cost: Colorless