Offense ques…

I read somewhere that ninja heroes need 5 tiles to get to 1x mana. Can anyone confirm this?

And to get to 2x and 3x mana charge, it would take additional 5 tiles + 5 tiles?

(Assuming no emblems and troops)

And how many tiles does exploding a diamond count as?

Just trying to wrap my head around how many tiles it takes to charge the ninja up on offense.

Defense ques…

How many tiles hitting the ninja on defense does it take to reach 1x, 2x, 3x?

Thanks in advance