Thantax, Abyssal Summoner

Menace, intimidate (This creature can't be blocked
except by two or more creatures and this creature can't
be blocked except by artifact creatures and/or creatures
that share a color with it.)
When you cast Thantax, create two 2/2 black Skeleton creature tokens with menace.
{4}{b}{b}, Sacrifice a Skeleton: Draw a card and
create two 2/2 black Skeleton creature tokens
with menace.
Thantax gets +1/+1 for each Skeleton you control.