For me the real question is: Can a Fast hero charge with 6 tiles with the new Magic troop + costume bonus of 5% + eventual mana node of 4%?
And also, can a Slow hero get to charge with 9 under these same circumstances?
No, both fast and slow heroes needs 34% to charge with 6 and 9 tiles.
(Optimal Mana Bonus Numbers for Every Mana Speed (Now including Ninja Heroes))