Ludwig skill is not like in description

[Pyt]

The caster gets taunt that prevents enemies from using Special Skills on the caster’s allies for 6 turns.The caster gets +84% defense against Special Skills for 6 turns.Nearby allies receive mana each turn for 6 turns. Received mana increases each turn until the last turn, when 100% mana is received.

The last part is not true. Enemy next to Ludwig shots more than 2 times at least.

[Radar1]

They receive mana each turn and the amount of received mana is bigger every turn.

16,6% 1 turn
33,3% 2 turn
50% 3 turn
66,6% 4 turn
83,2% 5 turn
And 100% 6 turn

It can generate enough mana to let heroes fire 3 times without any other mana income.