Breach is Fathom’s second ability. Breach launches Fathom forward, damaging and knocking up opponents in a radius of 6 metres when landing, which can be upgraded to 9 metres with the first upgrade.

You are able to leap in any direction besides a 5 degree cone beneath you. This allows you to leap directly upwards, allowing you to use Breach as a third jump.

During the leap forward, you are unable to air dash (in any way) or air jump. You are able to air dash and air jump only by buffering the inputs beforehand. You are still able to wall jump.

Breach can be incredibly useful for starting Heavy Melee Cancels.

The knock up from Breach only activates when you land on solid ground. You can store the knock up by simply not touching the ground.

You can store the knock up through:

• Transit Lines
• Stuns
• Reefdweller Harpoon
• Knockups
• Actives like:
  • Warp Stone
  • Phantom Strike
  • Majestic Leap
  • Ethereal Shift
  • Magic Carpet

You can store Breach long enough for the cooldown for Breach to end. You can use this to do double knockups (or triple or quadruple with Echo Shard and/or Refresher).

Fathom’s current third ability is Reefdweller Harpoon. When cast, Fathom hooks onto a wall and pulls himself towards the surface. When he reaches the surface, he gains another charge of Reefdweller Harpoon.

While being pulled towards a surface, you start accelerating over a period of ~2 seconds to a peak speed of 1496.14 u/s.

You are able to cancel Reefdweller Harpoon at any time by either uncrouching (by holding the duck button before casting Reefdweller Harpoon then releasing during the pull) or using Fathom’s first ability, Scalding Spray, during the pull in. The act of cancelling Reefdweller Harpoon is called Harpoon Cancelling.

When cancelling Reefdweller Harpoon, it also gives back another charge; this allows you to repeatedly Harpoon Cancel (infinitely if Harpoon Cancelling by uncrouching).

This, in conjunction with his passive ability to become invisible when out of combat, allows Fathom incredible map presence, traversal and gank potential.

To execute, hold duck before casting Reefdweller Harpoon. While being pulled in, release the duck button. To Harpoon Cancel using his first ability Scalding Spray, simply cast Scalding Spray during the reel in.