Dimi, Artisan of Storms

You may pay any amount of life as an additional
cost to cast spells.
Whenever you cast a spell, if at least 3 life was
spent to cast it, put a number of +1/+1 counters
on Dimi equal to the amount of life spent to cast
that spell.
As long as Dimi, Artisan of Storms has six or
more +1/+1 counters on it, it has flying, trample,
and hexproof.