Destiny 2 Season of the Wish
Iron banner is bringing in a whole new strand wave frame grenade launcher next week known as Tusk of The Boar. And it looks to be incredible, it has the Forbearance like perk chain reaction but also the first of its kind to roll deconstruct. This one grants ammo from nothing directly onto the mag when hitting multiple targets in quick succession and with a wave frame GL there is no easier weapon type to meet this criteria.
The single fire mag size also helps a bunch here, to gain ammo from deconstruct you must hit half the total mag size in this case 1. And an additional 2 hits to generate ammo. So if you hit 3 or more targets with a wave you will be given 10% of its total mag (1) rounded up. So essentially a completely free mag refresh.
This makes the Tusk of The Boar perfect for taking out groups of ads, which is what wave frames we're already known for, with unlimited ammo and no reload required.

Intro: 0:00
Deconstruct: 0:24
Strand Synergy: 1:30
Uses: 1:50
Other Perk Choices: 2:05