Thars, Heir to Dragons

Menace
Thars, Heir to Dragons costs {1} less to cast for
each creature that died this turn.
Humans, Viashino, and Dragons you control
have haste.
When Thars, Heir to Dragons enters the
battlefield create a 2/2 red Human creature token
with first-strike and a 4/4 red Dragon creature
token with flying.