Guard allies you cast spells on and those that are very nearby. If you or a guarded ally would take damage based on level, you're both granted a shield.
55.73%
2.85%
53.48%
1.01%
53.11%
4.34%
52.89%
77.39%
52.64%
25.29%
52.47%
0.52%
51.89%
52.05%
51.82%
13.73%
51.58%
90.81%
51.52%
0.6%
51.47%
1.12%
51.43%
15.07%
51.15%
86.43%
51.08%
0.55%
50.36%
9.69%
49.72%
0.75%
48.42%
8.27%
47.78%
1.4%
47.77%
9.79%
47.54%
0.97%
47.46%
47.36%
1.36%
43.97%
0.5%