YMIR IS HERE

Prophetic takes way too long to come online and you don't have ranged poke as ymir like Charon and Yemo do

You're right but not every god follows that principle. In this case, Ymir would benefit more from mobility items like Winged Blade/ Relic Dagger with other items like Pridwen and AURA's like Spectral Armor/ Sovereignty etc

Overall, I don't see it like a "bad" build but I would definitely get at least full cdr and some mobility on him... and yea void domaru is kinda ***

It does, and it's not necessarily a bad thing, and people have been building both here and there.

I would take Kriega's rec here in not going Prophetic on Ymir. It does take a while to stack, so Thebes will be more beneficial quickly for protections, though I do like the item overall especially for the higher prots compared to Thebes once stacked, plus the CDR.

I see you replaced Prophetic with Mantle of Discord. I definitely wouldn't suggest that early. For a first item it's quite expensive, and while it has some good situational function, it provides no early health (of which health is very important early for tanks when pen isn't high yet). Instead, just go straight into Thebes, and then continue building from there.

Kriega's also mentioned the current state of Void Doumaru is probably not that strong, so you could consider replacing that item with another item in the aggressive build. I personally wouldn't have more than 1 standard item without protections, and I still think counter items are important in most situations. If you don't need Divine, you can also consider Erosion which is not on the situational list, along with Relic Dagger, Archdruid's Fury, Midgardian Mail and Spirit Robe.