This cards is focused only on Jenos heal talent. If you play Jenos and you don't yet try heal talent with this card's you should.
All allies already affected by Astral Mark are Healed for an additional 285 when you use Astral Mark.
Reduce the Cooldown of Astral Mark by 2s.
Increase the range of Astral Mark by 16%.
Increase the duration of Astral Mark by 1.6s.
Gain 5% Lifesteal.
Increase your Reload Speed by 5%.
This cards is focused only on healing. You can increased range or duration but I think it's not necessary because this cards is good enogh.
Reduce the Cooldown of all your abilities by 30%.
Increase your base maximum Health by 15%.
Increase your Reload Speed by 60%.
Reduce the Damage you take from Direct and Area of Effect attacks by 16.5%.
From cards first you should do is buy chronos on level 3, other 3 type's of cards depence from you or situation.
This is strong with tanks which have rejuvenate on level 3 and in their build increased healing!!!
When you play Jenos you need to know movement with his F, and in which time you use his abilities.