Ancient Semi-Support (Stat Build)

Since you said semi-support, I'm assuming you stay in lane with a carry. You really want 1 level of chilling touch for a kill. At level 1, you get 150 magical damage for every hero. The 15% attack isn't much. Tango's normally doesn't cut it for regen in lane unless you're palying super passive. As a support, you really shouldn't level stats that hard. Although his spells aren't that good ice vortex is pretty good during chases and gives the sight. As I said before, chilling touch makes kills alot easier with the additional magic damage and it's still relevant up to the mid game. You also bought no stat items and had to get stats instead. Youre going into lane with about 500 hp. I also don't know what the sage's mask is there as you're not suppose to be spamming spells in lane.

Sage's Mask gives nothing early game.