Absol Prime, for 1 D Energy and 1 C Energy does 70 damage to the active if you Lost Zone a Pokmon from your hand with the attack Vicious Claw
An X spell is also inherently flexible because you pay what you want for X
a1-93-frosmoth is another option, but you'll have to add Water Energy to your Fire deck, which could make things awkward
Inferno TitanInferno Titan, Trumpeting CarnosaurTrumpeting Carnosaur, Red DragonRed Dragon, Wurmcoil EngineWurmcoil Engine, BalorBalor
9 Mickey Mouse, Trumpeter (Alternate Art) - $128.03 Anyway, Here's Wonderwall This card is incredibly deceiving if you only take the numbers into account
Typically, double strike is best when it allows your creatures to hit first, hit twice as hard, and survive combat while making sure your opponent and their creatures dont