Inductive 'hokje'

Enchant klaas
Enchanted klaas does not untap during its user's
untap phase and has "{t}: The chalk cost of all
spells is doubled until the end of the following
turn. add 1 box counter to inductive 'hokje' "
{5}- {x}: untap enchanted klaas, where {x} is
the number of box counters on inductive
'hokje'