With Scream Tail, you can build Gardevoir, send the Energy cards to the discard pile, and then suit the Scream Tails with both Energy cards and damage counters
You must pay a certain amount of ink for your character to be played, but you have to wait for the ink to dry (your next turn) before you can use their abilities (unless the card specifies differently.) Use a character ability that doesnt require them to exert
This is going to be a blast
A few more of these rare league cards can be found through other means, too
Boggart Cursecrafter Boltwave Booby Trap Boomerang, Blade Flinger Brallin, Skyshark Rider Brazen Cannonade Brazen Dwarf Breath of Malfegor Brimstone Trebuchet Brimstone Vandal Broodbirth Viper Bulwark Burning Cinder Fury of Crimson Chaos Fire Burning of Xinye Cabal Paladin Cartouche of Strength Catti-brie of Mithral Hall Cavalier of Flame Cavern-Hoard Dragon Cerebral Eruption Chainer's Torment Champion of the Path Chandra's Ignition Chandra, Awakened Inferno Chandra, Flame's Catalyst Chandra, Legacy of Fire Chandra, Pyrogenius Chandra, Roaring Flame Chandra, Torch of Defiance Chelonian Tackle Circle of Power Collective Defiance Colossus of the Blood Age Commodore Guff Conclave Evangelist Contested Cliffs
Usually these Pokmon have better skills and outclass others with their special abilities or unique attacks