The ability cost one more mana, but made this a fairly efficient attacker, as it makes combat math quite a bit more difficult
But sneak an attack in with these guys and watch out for cards that are way more busted than a 7/7 with trample, think along the lines of Bloodthirster, Worldspine Wurm, or Blightsteel Colossus
Even if you fuse them together, you're talking some pretty condition removal for a huge cost
So far, only one set has been released in Pokmon TCG Pocket although the second has been announced
Eshki is a bit more of a generic big creature commander, not having any specific Dragon abilities, but giving you a free draw when you cast a creature with power four or more, and then dealing damage equal to Eshkis power when you cast a creature with power six or more