usually you do not know the elements you will be facing in a duel. (War is a huge exception to this)
Against 2/12 of the elements this card acts (currently) like 2 Lightning Bolts (Converted value 5|4)
Against 10/12 of the elements it is a low cost heal (Converted value 1|0)
Total
(10+10)/12|8/12 or 1.67|0.67
Increase cost to 2
|2
or
Have it do half the healing as damage
2/12 acts like 1 lightning bolt (2|1)
10/12 acts like lite heal (1|0)
14/12|2/12 or 1.167|.167
And set cost at
|