Champ concept idea - Totem Shaman

A totem shaman. A control mage kind of like heimerdinger.

The shaman will be able to summon a variety of totems which can heal those in the area, grant attack buffs, damaging totems or increase resistance. The ultimate will be to summon a totem golem. The golem is also buffed by totems. Not sure what else the totem golem will be able to do yet. The totem shaman can use an array of magic such as lightning bolts to stun briefly one target, water projectiles to slow multiple enemies or a lava blast to unleash damage. The totems last quite a long time but can be destroyed by enemies by attacking it with skillshots or autoattacks. I'm still stuck choosing the last ability. Help me decide or post your own. The abilities range from a hex (polymorph). A totem falling from the sky like veigar. Mini totem grunts summoned.

While in a totems viscinity certain abilities are enhanced. The more totems of the same type, the effects stack to 3 times and abilities are enhanced stacking to 3 times. For example the healing totem will upgrade the water projectile ability. With 3 healing totems, the water projectile increases in AOE and leaves behind a puddle, etc.

Thoughts?