Jack’s Resonator from the Duel against The Battle Beast.
Level 1 FIRE Fiend-Type Tuner monster
You can only activate the (2) Effect of “Double Resonator” once per turn.
1. If this card is Normal or Special Summoned: You can target 1 face-up monster on the field; that face-up monster is treated as a Tuner this turn.
2. During your Main Phase: You can banish this card from your Graveyard, then target 1 Fiend-Type monster you control; that monster is treated as a Tuner this turn.