Storm Diver's Additions Mod/Ice Grenade

The Ice Grenade is a pre-hardmode thrown weapon that functions identically to regular grenades, but inflicts Frostburn to any enemy it damages

Trivia

 * Originally these used to be a hardmode ammo called "Cryo Grenades" that were used for the Cryo Launcher, but when the latter changed ammo type these were turned into a prehardmode throwing weapon