Hank, the Storm

The first time a spell you control resolves each
turn, put X hank counters on Hank, the Storm,
where X is the number of unresolved spells on
the stack. (A creature gets +1/+1 for each hank
counter on it. Hank counters are removed from a
permanent at the beginning of its controller's end step.)
{u}{b}, Exile spells you control with total mana
cost X or greater: Hank affix X twice. (To hank
affix X, replace X hank counters on this creature
with +1/+1 counters.)