noirscape
Cultist
I went to take a look at the Armor article for you, and these armors also leave an effect:
Molten/Meteor Armor:Flaming effect behind you.
Jungle Armor:Grass particle effect behind you.
Ninja Armor:After image.
Shadow/Ancient Shadow:After image+Color change on rocket boots.
Crimson Armor:Emits red particles.
Cobalt Armor:After image.
Adamantine Armor/Spooky Armor: pulsating outline around you.
Frost Armor:Snow effect when walking
Hallowed Armor: pulsing Outline+After image.
Also, Necro and Frost armor replace your pain sounds with Bone and Ice shattering sounds
EDIT:Fixed Sprites
Molten/Meteor Armor:Flaming effect behind you.
Jungle Armor:Grass particle effect behind you.
Ninja Armor:After image.
Shadow/Ancient Shadow:After image+Color change on rocket boots.
Crimson Armor:Emits red particles.
Cobalt Armor:After image.
Adamantine Armor/Spooky Armor: pulsating outline around you.
Frost Armor:Snow effect when walking
Hallowed Armor: pulsing Outline+After image.
Also, Necro and Frost armor replace your pain sounds with Bone and Ice shattering sounds
EDIT:Fixed Sprites