Crimson Resonator

Level 2 DARK/Fiend Tuner Effect
800 ATK / 300 DEF

If you control no monsters: You can Special Summon this card from your hand. If the only other monster you control is exactly 1 DARK Dragon Synchro Monster: You can Special Summon up to 2 "Resonator" monsters from your hand or Deck, except "Crimson Resonator". You can only use each effect of "Crimson Resonator" once per turn. You cannot Special Summon monsters from the Extra Deck, except DARK Dragon Synchro Monsters, the turn you activate either of this card's effects.

Rulings – Yugipedia

Printings:

Eternity Code: ETCO-EN017 (Common) - 2020-04-30
2021 Tin of Ancient Battles: MP21-EN053 (Common) - 2021-09-30
Structure Deck: The Crimson King: SDCK-EN008 (Common) - 2023-09-21

Prices:

Cardmarket: 0.06 €
TCGplayer: $ 0.14