Igneous Hammer is a new Hand Cannon introduced to Destiny 2 in Season of the Chosen. As a Trials of Osiris weapon, this one is only available to those players that fight their way through enough matches. Those that manage to get to the Lighthouse might even find themselves with an Adept version. As far as Igneous Hammer god rolls go, this thing is pretty powerful and can be made even more so with the right perks.
Igneous Hammer god roll
The Igneous Hammer in Collections comes with Quickdraw and Celerity. While Quickdraw is great, Celerity relies too heavily on your team being dead.