Trace

You attempt to identify the source or destination of a spell or spell effect you are aware of. If the spell is of 3rd level or lower, you automatically succeed. If it is a spell of 4th level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, you can determine one of the following things:

• The location of the caster or the target of a spell attack 
• The source or destination of a divination spell, as well as a vague description of the caster or target
• The source or destination of a sending spell, as well as a vague description of the caster or target
• The source or destination of a spell that allows a creature to teleport

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, tracing the spell automatically succeeds if its level is less than or equal to the level of the spell slot you used.