At three generic, one green, one blue, and one red for a 5/5, without any trample of evasion, it's a little on the expensive side
Fusion Strike Energy is a great card for Fusion Strike Pokmon since it can count as one of any type of Energy, while also protecting them from opposing Pokmon Ability effects
Bloodline Keeper and Lord of Lineage Bloodline Keeper is a Vampire Creature card with flying
Because of its cheaper cost, surprise factor, and versatility, I put it slightly higher in my book than Grim HaruspexGrim Haruspex or Species SpecialistSpecies Specialist
#6 Mega Diance ex Battle Deck Im not going to sugarcoat this by saying Mega Diancie ex as its own deck is anything other than a bit niche probably a deck you are more likely to play for fun than anything else
Affluence Energy (ACE SPEC) As long as this card is attached to a Pokmon, it provides 1 Colorless Energy When you attach this card from your hand to one of your Pokmon, draw 4 cards