If that is the case, I think it is very underpowered.
Maybe it should take the creatures 'hit points' into account. For example.
Currently it does this:
Deal N damage to target.
N is 2x loaded creature's attack + 5.
If target is Permanent, Destroy it.
Gain Load
With Hitpoints taken into account, this:
Deal N damage to target.
N is loaded creature's attack + hit points + 5.
If target is Permanent, Destroy it.
Gain Load.
This would be extremely overpowered when throwing Titans around...
A thrown Titan would do 7 + 70 + 5 = 82 damage. But, it would require a three card combination: Trebuchet/Catapult, Titan and Animate Weapon. The Gravity & Air combination makes this even more possible... Maybe, Weapons cannot be thrown?
Another example is to throw a Massive Dragon at your opponent...
It would do 8 + 30 + 5 = 43 damage. It would cost a lot of quanta to pull off though, 12
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for the dragon, 5
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for the catapult, 1
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to load, 1
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to throw... So, might be balanced?
One final, and perhaps most unbalanced example would be:
A Massive Dragon + 6 Basilisk's Bloods. Cost would be as above, +6
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.
Thrown, this would do 8 + 30 + 120 + 5 = 163 damage...
My final solution to this problem would be that creatures with more than 20 hit-points cannot be loaded.
And my reason for suggesting this is, that when a creature is thrown from a catapult - I don't think it's attack rating should determine the damage it does, it should be it's size and bulk which determines how much damage it does. Which is why Hitpoints + Attackpoints should be the damage it does, instead of it's Attackpoints x2.