Spell for consideration

[Birbin_again]

@mean_liar

Terram wards only work against objects you can detect. Not sure about the others (check Rego Terram guidelines in the main book).

Also, the reduction to magnitudes is because Wards are assumed to be R: Touch, D: Ring, and D: Circle (check Wards in main book, p114). The example given under the Wards entry is that a Personal range Ward could last for a Moon duration without affecting magnitude.

1
As Cuchulainshound said check Te 5 guideline.

2
I have checked the rulebook and found these 'R: Touch, D: Ring, and D: Circle'
parameters are only for wards against magical things. So no errata needed for the Ward against Wood spell.