Tomigon, Dragons' Overlord

Dragons you control get +2/+2 and has haste.
At the beginning of your upkeep, you may sacrifice a dragon if you control four or more dragons, if you do, create a legendary 8/8 red dragon creature token with flying and "sacrifice another dragon you control: target opponent loses life equal to its power" named Tomigon's chosen.
I'm not mad, I'm always like this.