How is Thanatos typically built?
Thanatos is a typical jungle god. Build physical damage and penetration. My build is Bumba's Mask, Warrior Tabi, Jotunn's Wrath, Titan's Bane, Brawlers Beat Stick. Then late game, sell Bumba's Mask and Buy Deathbringer. If you want, build Bloodforge instead of Brawlers Beatstick for the lifesteal while sustaining high damage, however I find his 1 ability has enough lifesteal.
So I play joust mostly, but I find that if you're playing thanny in a lane game, it works best for me when I finish his cooldowns as fast as possible, then focus on items that keep him in the fight. Since he cuts down other players pretty quick, I feel it's important to keep him in the team fight and ramp to finish the kills. I've gotten a lot of Deicides with thanny using this build. First I build watchers gift, which extremely helps him stay in lane. thanatos's abilities already don't cost him much mana because they balanced that with his requirement of health in addition in his castings. I have used watchers gift always and it works like a charm. In this order, I build warrior tabi, jotunn's wrath, mail of renewal, spirit robe, bloodforge, and that last item really doesn't matter at this point because if you have a good team, and you're playing him the right way you should have made them quit already haha.. With this build, focus on staying safe, and poking the enemy team with your skill shot (rank this up fast).