Thenona, Herald of Kleth

When Thenona is the target of a spell or ability
you may pay {r/w}{w/b},
If you do, create an X/X black Thrull creature
token where X is that spell converted mana cost
It becomes the new target of that spell.
{t}, Sacrifice another black creature :
Add any combinaison of {r} and/or {w} equal to
the number of Thrull you control,
You loose 2 life, Draw a card.