There is no cold based melee attack in rouge.
The strongest cold buff you can get is “cinder strike” -> oil coating (max attack speed for highest stack possible) -> fire into elemental damage node.
I would add items to this item:
Mai hand the sceptre, off hand your set.
You have now (24 meele cold DMG (MCD) screpte plus 40 MCD sword, plus 53 m physic damage.
Your cinder strike adds 20-40 fire DMG on hit.
The mounting frost shoes add ~70 meele/spell cold DMG for +70% more damage taken)
As Summe, you have now (134 cold, 20 fire, 53 physic + skill tree) base damage.
You do not have attack speed on weapon, so you will sit at 150% attack speed, which roughly translate in 10-15 oil coating stacks, which are 250-325% elemental damage, 500-750 dogde rating.
I would also change the relic to:
The setbonus from your sword+relic is useless, and your relic is to specific, +70% melee cold DMG, +80% freeze multiplier…
My relic adds more in boss fight and heavy rare hitpoints enemy.
100% cast water orb per hit with 3 sec cool down means on bosafight, 12 waterorbs around you.
You get 3 when int = attunment , and you should be on 0 int and art as rouge.
12 orbs = 12*30% cold damage (melee and spell) = 360% damage
And 360% lightning damage.
Now check “lethal mirrage” , were you can skill 32 mpd and 20 m lightning DMG), a attack which profits from your 300% elemental damage, and 360% lightning/cold damage.
Do not forget your base melee cold damage from weapon and boots.
Last think, the cold spell damage from spectre.
You have 15% chance for casting “tundre nova”, with 150% attack speed,and normal 1 base attack per second, you will end casting the nova 1 per second.
You also cast every 3 sec water orb, 3 piercing projectile who do cold damage.
Both spell get now:
+16 cold spell damage (csd) + 14 + 50 (spectre)
- 70 boots
= 150 cold spell damage, that’s a base number on the same level like mage get on there spells…
This spells now profit from your rouge +% (oil coating, movement speed->gear)
You also can add now this 2 items:
+12 cold spell/melee
+30 melee cold damage
In my opion should this rouge with cinder strike as carry attack work.
You have melee basic 176 cold, 77 physical
- Cinder strike: 20 - 40 up to 32 - 76 fire damage
- Lethal mirage +24 physical, +20 lightning
You have 162 cold spell damage.
Your normal roation will have cinder strike + 2 spell to cast, and 1 burst attack lethal mirrage.
So you have 3 skill free, 1 movement, 1 defence, 1 utility.
In my opion blind:
Cinder strike has node, which changes blind-> critical vulnerability.
Blade dancer + marksman and cinder strike should be able to get ~175% critical vulnerability.
Which translate at 3 attacks per second 3.5 stacks.
1 stack gives 5% crit chance, and -10% crit dogde on enemy
So even without sword+dagger crit build, you should be able as spectre+sword to get high crit chance per attack.
My thought about item for melee cold rouge.
Bow rouge is different, you have with detonating arrow one cold attack, but no extra base DMG in skill, so it underwhelms at the moment to a cinder strike bow elemental build.
“Osprix bow” is here bow to pick (+90% elemental damage) +26 fire base, +30 physical base.
As quiver “farwood” +8 cold base.