Text (FE+errata): As an additional cost to cast ~this~, sacrifice a Goblin. ; ~this~ deals 5 damage to target creature or player. [Oracle 2009/07/08]
You cannot sacrifice more than one Goblin to get a greater effect. [Aahz 1994/11/15]
When Forked, you do not need to sacrifice another Goblin. The Goblin was part of the cost and need not be repaid when using Fork. [Duelist Magazine #4, Page 6]
Extended tournaments (see Rule 913) have banned this card since 1999/10/01.
