venom-crawler

when venom-crawler attacks, you may sacrifice a creature. if you do, put a venom counter on
venom-crawler and deal damage to
defending player
equal to the number of venom counters on venom-crawler. if that damage is three or more, create a
2\3 black chaos spider token creature.
when venom crawler dies, it deals damage equal to
the number of venom counters on venom-crawler
to all creatures.