Kira, scheming Stormcaster

Deathtouch, Triple Strike, Vigilance
{4}{b}{t}, Spells you cast this turn cannot be
countered. Put a storm counter on Kira. When
there are 4 storm counters on Kira, exile her and
then create a 10/10 blue Tempest Vampire with
Flying and Deathtouch.
You never know the amount of destruction
a storm can do