When it destroys an opponent's monster by battle and sends it to the Graveyard, gain Life Points equal to that monster's original ATK
When used against weaker single prize archetypes like Mad Party, Stoutland V can easily flip the prize trade in your favoreven without the extra oomph given by Arceus & Dialga & Palkia-GXs Altered Creation-GX
But there is a known set sequence, which you can find on Bulbapedia: The Japanese release are ordered by the types first, then ascending rarity (Rare and Rare Holo are considered the same), then National Pokdex number, followed by Trainer and Energy cards
And if recent promos are any indication, supplies arent likely to last long
Kitty White is dressed as Dark Magician, Cinnamoroll earns the covetous Blue-Eyes White Dragon and Pompompurin donning Exodia the Forbidden Ones gear is legitimately funny