Goblin Mime's Third Cousin

Whenever you speak, flip a coin. If you win the
flip, Goblin Mime's Third Cousin deals 3
damage to target creature. Otherwise, sacrifice
Goblin Mime's Third Cousin and it deals 3
damage to you.
Urk had a little surprise for a man who had the
audacity to ask him to replicate a "Goblin Grenade."
This however could result in Urk's untimely death,
it would also finish off his third act with a great finale.