Forum:Card guard

Card Guard's effect says that when its normal summon, put a guard Counter on it, And for each guard counter it has, add 300 attack point. The Question is,

1, If Card Guard still has it own guard counter, can he be prevent from being destroyed? 2, If Card Guards gives its own counter to another Card Guard, does the other Card Guard adds 300 attack points its attack?

Please solve the problem im having, Thanks!