If you didn’t know already, the INOV-EN081 card slot is a Synchro, and has just been revealed!
Vermillion Dragon Mech
Level 9 / FIRE / Machine / 2700 ATK / 1800 DEF
1 Tuner + 1 or more non-Tuner monsters
Once per turn: You can banish 1 Tuner from your hand, field, or Graveyard, then target 1 card on the field; destroy it. If this Synchro Summoned card is destroyed by card effect and sent to the Graveyard: You can target 1 of your banished Tuners; add it to your hand.