by Greg on Apr 22, 2016
Knowing how the new Infusion system works in the Taken King is extremely important, as it is the only way to increase the attack power and defense of Legendary/ Exotic gear to the highest levels possible. The concept of Infusion is very simple. You take a piece of lower rarity (or same rarity) but higher attack/ defense than the piece of gear you want to keep (a legendary with good perks and stats or exotic) and infuse it, granting the piece your keeping with 80 – 90% of the attack/ defense of the piece you used to infuse.
Infusing a weapon can be done by going to its details page and looking for the yellow infusion icon on the left hand side. If you hover over it you can see the required materials for each infusion.
Legendary weapons will cost motes of light, armor/ weapon components, glimmer, and legendary marks; while exotics cost the same but replace legendary marks with an exotic shard.
Only year 2 exotics and legendarys can be infused with another weapons power. Only year 2 rare, legendary, or exotic weapons can be used to infuse another weapon.
By using weapon and armor infusing you can keep those legendary/ exotic items you love using relevant by using blues with high armor/ attack ratings to buff them up. Just remember that the process is permanent, so double check you’re not accidentally using something that you want to save to infuse something else.