Auratus & Hertic addon

Two gems from the Honored One event, both Mythic — no energy cost, can't be traded or spawned, only drop when the holder dies.

Auratus (currently Stormz). Grapple gem. Two chains pull enemies in or yank you to terrain; shift before impact for a ground slam that AOEs and kills nearby wind charges. Echoing Aegis is a parry — go invuln for a moment, reflect the hit back, heal a bit, come out with Speed 3. Passively: Haste 2 while crouching, barely any fall damage, extra reach with reverse knockback. Combo it with Aegis to drop a sky anchor you can grapple to (yes, flagpoling someone off it is the Atomic Wedgie).

Heretic (currently PikaTM). Bleed gem. Bloodsaws fire two projectiles that bounce and pierce; land both fast and you get the spore fountain that makes anyone standing in it take amplified damage. Bloodlink slams up to three players and ties them together so damage to one hits the other. Passives are nasty: all your hits auto-crit, Strength lasts way longer, bleeding targets take double, and you can't lose more than ~6-7 hearts in a single hit.