Near: Spell Rank * 10 meters
Detect magick nearby.
The caster makes a Gnosis check (1d20+GNO) to see if they notice anything magical around them. If they do, they will get a general idea of how powerful the effect is.
Once they find the effect, they are also able to use Spellcraft or Arcane Lore to get more specific knowledge about the effect.
This effect last a number of rounds equal to the caster's Power Modifier.