The Fire Trap is an Uncommon trap added in Chapter 2 Season 4. It fires fireballs which creates fire upon collision and deals 50 damage to a player directly, while the fireball can travel for 3 tiles, it only launches whenever a player is in range (3 tiles).
The Fire Trap has been vaulted with Patch 15.00, Similar to why the Poison Dart Trap was vaulted, the trap was relatively useless and took a very long time to reload.
This Trap is very similar to the Flame Grill Floor Trap found in Save the World. However since the fire mechanic doesn't exist in Save the World, the Flame Grill Floor Trap does not burn builds or damage the enviorment in Save the World.