Would a Mew Prime deck with Gyarados deck work? You could discard all 4 Magikarp so Mew would use Gyarados's attack, which does 120 damage, no energy reqiured. All you'd have to do is use Mew Primes attack, see off, to get mew in, then next turn do up to 120 damage. This could be T2 or T3, so it could be a Donk deck.
Mew
http://pokebeach.com/scans/triumphant/97-mew.jpg
Gyarados
http://pokebeach.com/scans/stormfront/19-gyarados.jpg
Mew
http://pokebeach.com/scans/triumphant/97-mew.jpg
Gyarados
http://pokebeach.com/scans/stormfront/19-gyarados.jpg