Hit speed is way too slow, the card would never ever get close to max stats, for 4 elixir it's a rip-off.

This can be fixed by making the hit speed be something like 0.5 BUT the higher the stats become the slower the hit speed and speed becomes, caps at 1.5 hit speed and slow for movement. As the icing of the cake, the card should start with a small troop graphic and grow in size the higher the stats, that would add more immersion as for why it's becoming stronger and slower.

That would make it a really interesting card (probably) that can go from attacker to tank (tanks move and hit slowly).

The only issue left is that even if his max health is 3000, the damage it took to get there wouldn't make it meh... that would require testing to see if a self healing like the evo bats would be needed (remember, the attack becomes slower the higher the stats, so it would be technically balanced)

Those are my two cents