Basically, as long as youve got a full set of Pokemon on your bench, youll do heavy damage (Base 10, +10x each Pokemon on your bench, up to 5 max) and with decent bulk to boot
Aided by the demon, he is able to track the creature's current host, but any attempts on killing the creature end up in the host being dead (either from the Honor Guard's hand, or by the creature escaping from its host and taking its life with it)
So it's great to hear that even his older cards, back for about the last year and a half to the Heartgold and Soulsilver series are good to go in the new online system
Additionally, it is shadowless, meaning there is no shadow around the cards image
However, it was not until three years later (from when the TCG first came out) that the game would be localised to the west