Destiny 2 Warlock BuildFire & Ice

Synergy:

•Facet of Sacrifice- Using a weapon with incandescent scorched targets ignite, spawning Firesprite's (utilizing Elemental Siphon artifact), also making you radiant when you pick up Firesprite's. This will build up your light transcendence bar.

•Facet of Devotion- Utilizing Coldsnap Grenades (before firing weapon) darkness debuffs will be applies to enemies, proccing devour when enemies are defeated, also building up your dark transcendence bar.

•Facet of Balance- Utilizing Coldsnap Grenades and light weapon both transcendence bars will be effected giving grenade and melee energy.

•Facet of Ruin- Using Coldsnap Grenades and a weapon with incandescent you'll have increased shatter and solar ignitions.

•Facet of Awakening- Using a dark grenade and light weapon you'll spawn Firesprite's and Ionic Traces.

Since Osmiomancy Gloves have additonal charge/ faster recharge for Coldsnap grenades this fits in perfectly with the fragments selected providing nearly 100% uptime on Coldsnap grenades plus filling up your transcendent bars extremely fast.

Side note: Arcane Needle can be swapped out for Incinerator Snap ( if you want to fill up light bar faster) and Facet of Awakening can be swapped out for Facet of Mending.