For one way to keep this alive long enough, you can try using Magic Reflector to prevent your opponent from destroying it using card effects
I'll admit that while their playstyle isnt really my cup of tea, their flavor is top notch
Gempalm Polluter A great card in zombie tribal decks, Gempalm Polluter lets you drain your opponent based on the size of your undead horde
It prevents all effects of attacks, including damage, done to Latias by Pokmon that have Abilities
For four mana, thats pretty expensive
For reference (based on your pictures and on the cards I can see more clearly): Impoleon is PO (creased cards = poor) Granbull PL (heavy played, has destroyed corners/peeling) Dialga LP (played with bad corners but not destroyed) Lepumentas/Rasaff GD