There are some interesting potentials to it. The problem comes in how to make these totems impactful enough that the player using them feels good, without making them so powerful that the character becomes innately broken.
That's generally why Riot is not fond of auras, it presents a lot of hidden power, and making them noticeable without being overpowered is difficult. Also, making the character able to do something in the laning phase without being just absurdly OP in team fights.
For example, if an aura gives 20 AD to yourself, that's a pretty strong aura. But it's not as effective in a 1v1(or probably even 2v2) lane as an ability you can cast to do 120% damage with a stun. In order to make the aura strong enough to balance out, it'd have to be like 60 AD... but if you give 60 AD to EVERYONE on your team, that's suddenly broken OP.
I like the concept of a totem based champ... but I feel like it would just be a bit of a challenge to make it satisfying yet not OP.