Ability Level Problems

I am doing a big bang attack ability for dbz surpreme rpg

I used an invisible archer to fire the Big Bang Attack, but I need the ability to have 10 levels, but since the archer is firing it i can't change the damage.

I need to know:

#1 how to change the damage of the attack of the archer for each level of the ability.

#2 how to change the ground deformation for each level like for example, level one might have a small bump, level 2 a small crater....... and level 10 a massive crater.

Thanks

1 - Make spells that damage (like firebolt), 10 of them, and order the acher to cast them, add the abillity via trigger, or make 9 abilities that increase damage(based on item ones) and add them to archer, ordering it to attack the target.
2 - When making the spell trigger use the action Enviroment - Create Terrain Deformation:Crater

2) have multiple if then else statements
if level of big bang for vegeta = 1 then create deformation 1
if level of big bang for vegeta = 2 then create deformation 2
etc.
this is the one case i would suggest just if/then/else and not if/then/else multiple functions because if u use multiple then that comes out to 40 lines.. which is a lot as opposed to 10.

or just wait for 1.17 and use the great new set ability level triggers!!!! ^_^ Im so happy blizzard added those!!!! they're grrrrrrrrrrrrrrrrrrreat!

thats not what he wants. im using westfall beta and theres a lot of cool triggers that are in my map... and i cant beta test my map with a lot of people :(

The problem with using terrain deformations like that is the terrain glitches when it gets lowered too far. So a person can stand in one spot and keep using the ability over and over until the terrain glitches.