Thunderwhip Hellkite

Flying, First Strike
{r}: Thunderwhip Hellkite gets +1/+0 until end of turn.
On your upkeep, put a lightning counter on Thunderwhip Hellkite.
{3}{r}, Remove X Lighning Counters From Thunderwhip Hellkite: Thunderwhip Hellkite deals X damage to any target.
On each endstep, for each 6 damage dealt this turn, create a 2/2 red dragon with flying.