It's going to be a bit annoying to have to deal with no mana, but you have Circe's and Stampede to get you and/or your team out of situations. The mana issue should be gone when you get Genji's.
Ability Priority
Level first
›
›
›
Ability
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2
8
11
12
14
3
15
16
18
19
1
4
6
7
10
5
9
13
17
20
Swaps (1)
If there is more magical damage on the enemy team.