When you use a type of Spell Card that powers up monsters, play it face-up, and stack it on top of the target monster
Though still a pretty niche archetype, players buying up four copies of Boilerbilges to try it out will have meant there were fewer copies on the market, which left the card more susceptible to spiking once Tannuk came along
Check out Ultimate Guards Katana Sleeves
An MP card is the most recent sale at $92, with an NM copy setting the pace at a whopping $239.99, with damaged copies dropping to much more attainable prices around $30.
The different levels of currency in the Pokmon TCG Live app include coins which can be used to purchase accessories for a players avatar, as well as their deck box and card sleeves credits, a currency that unlocks individual cards, and finally crystals, which can be used to purchase bundles and booster sets, alongside the aforementioned accessories
Quicksilver Elemental Market Price: $21.35 This is another combo card, working with Vivi Ornitier to generate infinite mana, copying his ability again and again to get around his "once per turn" clause