As of 1.4.0.1, speaking to the Dryad in a Hardmode Graveyard biome allows purchasing the seeds of the evil biome opposite of the current world's evil biome (i.e.However, both the Heartreach and Thorns Potions can be found in Chests, regardless of world type. The Fishing feature introduced in 1.2.4 seems however to have balanced this by giving Crimson worlds the Heartreach Potion and Rage Potion while only giving Corruption worlds the Wrath Potion.
This is likely an unintended issue which arose with the 1.2.3 change. This potion cannot be created in worlds with Crimson, as Worm Teeth are only dropped by Devourers in the Corruption.
