The Spear of Forked Tongues is a Ninjago weapon used by Lloyd Garmadon. It is a brown bident with a grey head and long, spiked, pale green tines (referred to as "tongues" by the official description). Its points can apparently be filled with poison, which is injected into foes when the spear pierces their bodies.
Fill the tongues with your venom of choice. The forked tongues pierce your enemy and inject venom for instant effect. Yikes! So of course, this is another one of Lloyd's favorites.