assassin

3 Assassin: Assassins gain a 10% chance to Critical Hit for 300% Damage
6 Assassin: Assassins gain a 20% chance to Critical Hit for 400% Damage
9 Assassin: Assassins gain a 30% chance to Critical Hit for 500% Damage

blood_bound

2 Blood Bound: When a Blood-Bound unit dies, all other Blood-Bound units deal +125% Attack Damage for the rest of the battle.

brawny

2 Brawny: All Brawny units have their maximum HP increased by 200.
4 Brawny: All Brawny units have their maximum HP increased by 500.

deadeye

2 Deadeye: Deadeye units focus their attacks on the lowest-health enemy.

demon

1 Demon: Demon units gain +50% Pure Damage. Active when you have only one type of Demon unit on the board.

demon_hunter

1 Demon Hunter: Invalidate your opponent’s Demon Alliance bonus.
2 Demon Hunter: Invalidate your opponent’s Demon Alliance bonus. Demon units gain +50% Pure Damage.

dragon

2 Dragon: Dragon units start Combat with Full Mana, requires 2 units and unlocks an additional ability for each member of the Alliance.

druid

2 Druids: The lowest star ally Druid is upgraded a level.
4 Druids: The 2 lowest star ally Druids are upgraded a level each.

elusive

3 Elusive: Elusive units gain +20% Evasion.
6 Elusive: Elusive units gain +45% Evasion.
9 Elusive: Elusive units gain +75% Evasion.

heartless

2 Heartless: Enemies suffer -5 Armor.
4 Heartless: Enemies suffer -10 Armor.
6 Heartless: Enemies suffer -15 Armor.

human

2 Human: Human units gain a 20% Chance to Silence target for 4 seconds when attacking.
4 Human: Human units gain a 44% Chance to Silence target for 4 seconds when attacking.
6 Human: Human units gain a 66% Chance to Silence target for 4 seconds when attacking.

hunter

3 Hunter: Hunters have a 20% chance of quickly performing 2 attacks.
6 Hunter: Hunters have a 35% chance of quickly performing 2 attacks.

inventor

2 Inventor: Inventors gain +15 HP Regeneration.
4 Inventor: Inventors gain +40 HP Regeneration.

knight

2 Knight: Knight units take 15% less physical and magic damage and an additional 15% when next to another knight.
4 Knight: Knight units take 20% less physical and magic damage and an additional 20% when next to another knight.
6 Knight: Knight units take 30% less physical and magic damage and an additional 25% when next to another knight.

mage

3 Mage: Enemies suffer -40% Magic Resistance.
6 Mage: Enemies suffer -100% Magic Resistance.

primordial

2 Primordial: Enemies attacking Primordials have a 25% chance to have their attack speed slowed by 50 each attack. This effect is applied at the start of the attack and lasts for the duration of the attack.
4 Primordial: Enemies attacking friendly units have a 25% chance to have their attack speed slowed by 50 each attack. This effect is applied at the start of the attack and lasts for the duration of the attack.

savage

2 Savage: Allies gain + 10% Attack Damage.
4 Savage: Allies gain + 25% Attack Damage.
6 Savage: Allies gain + 45% Attack Damage.

scaled

2 Scaled: Allies gain + 30% Magic Resistance.
4 Scaled: Allies gain + 50% Magic Resistance.

scrappy

2 Scrappy: A random scrappy unit is granted +9 Armor and +8 HP regeneration. Armor and HP are doubled whenever you have fewer units alive than your opponent does
4 Scrappy: All scrappy units are granted +9 Armor and +8 HP regeneration. Armor and HP are doubled whenever you have fewer units alive than your opponent does
6 Scrappy: All allies are granted +9 Armor and +8 HP regeneration. Armor and HP are doubled whenever you have fewer units alive than your opponent does

shaman

3 Shaman: Enemies affected by Hexes, Silences or Stuns will generate -200% mana when attacked.

troll

2 Troll: Troll units gain +35 Attack Speed and other Allies gain +10 Attack Speed. .
4 Troll: Troll units gain +65 Attack Speed and other Allies gain +30 Attack Speed.

warlock

2 Warlock: Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health percentage for 3 seconds. When either linked hero deals damage, both units are healed 50% of the damage dealt.
4 Warlock: Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health percentage for 3 seconds. When either linked hero deals damage, both units are healed 80% of the damage dealt.
6 Warlock: Whenever a Warlock casts a spell, they form a link with the Ally who has the lowest health percentage for 3 seconds. When either linked hero deals damage, both units are healed 130% of the damage dealt.

warrior

3 Warrior: Warriors gain +10 Armor
6 Warrior: Warriors gain +15 Armor
9 Warrior: Warriors gain +25 Armor