The Slagtern Staff is a craftable Pre-Hardmodesummon weapon that is a direct upgrade to the Overgrowth Staff. It spawns a Slagtern lantern minion that remains stationary above the player's head and fires lava bolt projectiles at enemies, which inflict the On Fire!debuff. Like other minions, summoned Slagterns are invincible and follow the player for an unlimited amount of time, unless the player dies, summons a replacement minion, or cancels the buff.
Its best modifier is Ruthless. The Mythical modifier provides the widest array of stats bonuses, but these primarily affect the initial summon rather than the resulting minion. Additionally, Minions cannot deal critical hits. The only significant advantage a Mythical Slagtern Staff has over a Ruthless one is knockback.