This is historically the most control colour combination, since both colours bring something important to the table - blue brings counterspells and draw, white brings point and mass removal
Black goes so well with this card
On September 9, the Pokmon Lost Origin TCG set will make its debut and features the Sinnoh Legendary Giratina as a VSTAR card
In principle you're ending on either Bubble Reef or Marbled Rock, with or without Crystal Heart protection, plus some combination of Toadally Awesome, Marincess Wave, Torrential Tribute, and/or hand traps depending on the composition of your starting hand, usually with good follow up in the form of draws and resource recursion
The Rapid Strike Tentacles attack can get powered up by just single energy
Since Dragapult ex's strategy involves attacking weak Pokmon on an opponent's bench, Shaymin is a useful stopper that can at least ensure that a player gets their strongest Pokmon into play