Polarities Mod/Tendril Amalgam

Tendril Amalgams are a Hardmode corruption-based enemy that appear during. Teleporting around the player similarly to spellcaster enemies like the Dark Caster, they summon sets of three tendril spike projectiles from the terrain near the player that jut out towards them, dealing heavy damage. In Expert Mode, at low health, they will instead summon three sets of two spikes each in rapid succession.

They will teleport between each attack, and have a 33% chance of performing an alternate attack instead where they summon a wide-ranged row of spikes straight up from the ground around them, firing in succession in a wave-like effect left and right, moving more rapidly in expert mode. While these attacks are dangerous and can be hard to avoid, the Tendril Amalgam itself deals no contact damage, so there is no need to worry about running into it while dodging them.