spell tactics question Options

[SentineloftheMou...]

Hi. It is my understanding that in order for a LOS spell to affect a person the mage must be aware of the person.

My question is this. If a mage uses a Stunball spell to stun an enemy group behind cover in a combat situation, but only sees those enemy people who return fire at the runner's team from his current location behind cover then can the mage use a familiar/ally spirit and the sense link power to order the familiar behind the enemy cover/barricades, so the mage is aware of the enemy targets behind cover.

If he casts a Stunball spell from his current location into the middle of the enemy targets would the spell effect all the enemy targets the mage sees through the sense link with the familiar??

Just so we are clear. I am not talking about the mage casting spells "through" the familiar. The spell originates from the mage's current location. The familiar would be outside the area of effect, so it does not take damage from the spell.

What would you do as a GM in this situation??