What would your special unit be able to do?

[Necrocat219]

Seer
7 wits
1 HP
1 Movement
0 Attack
Ability: For 1 wit will shield any friendly unit from all incoming damage. As soon as that unit or the Seer moves or attacks the shield dissipates, and if the Seer takes any damage the shield is broken. The shield cannot be placed on a unit that has moved and attacked this turn.

Designed for a forcefield effect, granting a very powerful shield to the unit in question. Whilst it might immediately either come across as overpowered there are a number of things that would make it a good special to have; for one it only has a movement of one and is very fragile, making babying very key. With only the 1 movement it is also fairly rooted in position and hard and expensive to move away from battle. Also the restriction of shielding units that have made all their actions makes wit space abuse harder.