display a DAX table through a measure

Well, that's a pickle because normally you would do something like:

Measure = 
var tableTemp = 
                UNION(
                    SUMMARIZE(Table1;"Phase";"Phase1";"Data";SUM(Table1[Phase1]));
                    SUMMARIZE(Table1;"Phase";"Phase2";"Data";SUM(Table1[Phase2]));
                    SUMMARIZE(Table1;"Phase";"Phase3";"Data";SUM(Table1[Phase3]))
                )
RETURN
  SUMX(FILTER(tableTemp,[Phase] = MAX('Table'[Phase])),[Data])

But, this would require that you have those Phase1, Phase2, Phase3 for your visual.

I cannot think of a way around this. With a Live connection, you will have to adjust the model by either unpivoting those columns in the model (on the live data source you are connecting to) or create a disconnected table in the live data source you are connecting to.