Signoir, the Devourer

Flying, Trample, Deathtouch
When Signoir attacks, you may sacrifice a creature.
If you do, Signoir gets +2/+2 until end of turn
When Signoir would deal combat damage to a creature, destroy it and Signoir gets +3/+3 until
end of turn.
"Darkness provides much strength to my empty soul; it
makes me salivate at the thought of it."