Attach up to 2 Water Energy cards from your discard pile to this Pokémon.
This attack does 100 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
During your opponent's next turn, the Defending Pokémon can't retreat.
For Greninja V-UNION in SWSH Black Star Promos, the current reference price is $5.21. Week-over-week change is limited (0.0%), indicating short-term stability.
Against its 30-day baseline of $4.97, this card is pricing 4.8% higher. In the past 90 days, observed prices ranged from $4.61 to $5.96 (26% spread), a moderate-volatility profile.
Rarity classification for this copy is Promo.
Current valuation lens: Short-term movement is stable (0.0% over 7 days), with price action clustered near recent averages. With a 26% 90-day spread ($4.61-$5.96), this card currently tracks as moderate-volatility.
Versus the 30-day average ($4.97), the card is trading 4.8% higher. Condition sensitivity is substantial: PSA 10 carries a +1359% premium over raw value.
PSA 9 is currently around $59.95, while PSA 10 is $76.00.
Greninja V-UNION appears in SWSH Black Star Promos, released in 2019. Its card type is Pokémon.
The rarity label is Promo. Printed HP is 300.
Energy typing is Water. This print is categorized under the V-UNION subtype.
Printed card effect: How to play a Pokémon V-UNION: Once per game during your turn, combine 4 different Greninja V-UNION from your discard pile and put them onto your Bench. V-UNION rule: When your Pokémon V-UNION is Knocked Out, your opponent takes 3 Prize cards.
Greninja V-UNION sits within a broader pool of Greninja variants that can be compared by set, rarity, and price. Comparable entries in this snapshot: 3 cards, 1 distinct set.
In this sample, pricing ranges between $3.70 and $4.42 (19% total span). Relative to the alternative average ($4.08), this card is +28%.
Notable alternatives include Greninja V-UNION #SWSH155 (SWSH Black Star Promos) at $3.70, Greninja V-UNION #SWSH158 (SWSH Black Star Promos) at $4.42, and Greninja V-UNION #SWSH156 (SWSH Black Star Promos) at $4.12.
Release year for SWSH Black Star Promos is 2019. SWSH Black Star Promos is grouped under the Sword & Shield era.
The checklist contains 304 cards, placing it in a very large expansion range. As of 2026, the set is 7 years old and now falls into an established back-catalog period.
Greninja V-UNION (#SWSH157) is one of the Promo prints in this expansion.
Other SWSH Black Star Promos cards:
Grookey #SWSH001Scorbunny #SWSH002Sobble #SWSH003
