The effects of the other two V Jump promos for Fall 2023 have been revealed! Sadly no card images were provided.
Junk Dragonsent / Junk Dragonlet
Earth Machine / Effect
You can only Special Summon with the way in this card name’s (1) effect once per turn. You can only use this card name’s (2) effect once per turn.
(1) If you control a Synchro Monster you can Special Summon this card (from your hand).
(2) When a Synchro Monster you control declares an attack: You can banish this card from your GY; that attacking monster gains 800 ATK until the end of this turn.
Magic Elf Burgundy/Burgundy the Magic Elf
Dark Spellcaster / Effect
You can only use this card name’s (1) and (2) effects once per turn each.
(1) If a card(s) is discarded from your opponent’s hand by a card effect while this card is in the Monster Zone: You can inflict 400 damage to your opponent for each discarded card.
(2) When this card is destroyed by battle and sent to the GY: You can discard 1 random card from your opponent’s hand.
Cheers to Eva for the translations.