"Army slots" are the bottom 3 slots in each build. They are awarded from successful dungeon completions and every leader has a distinct pool of options. Each slot can be changed after unlocking by spending Arclight Energy.
Summary
Blood magic is thicker than water magic.
Leader Ability
Dark Ritual
Thalnos gains 1 Level for each you play, until death.
Traits
Elemental
Ranged
AoE
Possible Army Slots
Talents
Bane
Playing a Spell increases Attack Speed by 30% for 5 seconds.
Drain Life
Gain Lifesteal.
Dominance
Spells costing 4 or more grant an additional level.
Recommended Build