Sure, the damage output isnt insane, but when paired with its evolution line into Charmeleon and eventually Charizard , this card shows how growth and progression work in Pokmon battles
Field of the Dead Zombie swarms come free with Field of the Dead
In addition, Mega Evolution Pokmon ex appear as Basic Pokmon, Stage 1 Pokmon or Stage 2 Pokmon and do not require an extra Evolution step (for example, Mega Lucario ex evolves from Riolu, rather than from Lucario)
Again, props to the translators for their efforts here
The card doesnt specify nonland either, meaning that your opponent could easily lose the bulk of their resources if they make one wrong move with this beast on the board
Both are easy to trade for but very difficult to move because the causal players who actually want these cards are generally unwilling to trade for them at $10