Boosts

You can expend unwanted heroes to BOOST another hero's stats. The boost is permanent, and the added stats transfer over after the promotion. The amount of stats earned depends only on the sacrificed Hero’s Class and Rank. These stat bonuses count towards the Boosted Hero’s stat maximums.
Each class gives different stat increases:
Rarity 	Class 	HP	Atk	Def	Skill	Mag	Notes
Common 	Thief 	0 	2 	0 	4 	0 	
Common 	Archer 	0 	2 	0 	4 	0 	
Common 	Wizard 	0 	2 	0 	0 	4 	
Common 	Guard 	5 	0 	4 	0 	0 	
Common 	Priest 	0 	0 	0 	2 	4 	
Uncommon	Warrior 	5 	4 	0 	0 	0 	
Uncommon	Rogue 	0 	4 	0 	2 	0 	
Uncommon	Paladin 	10	0 	2 	0 	2 	
Uncommon	Dancer 	0 	0 	0 	4 	2 	
Uncommon	Knight 	10	2 	0 	0 	0 	
Rare 	Sage 	0 	2 	0 	0 	4 	
Rare 	Scout 	0 	2 	0 	4 	0 	
Rare 	Sniper 	0 	2 	0 	4 	0 	
Rare 	Halberdier 	10	0 	4 	0 	0 	
Rare 	Poisoner 	0 	0 	0 	2 	2 	
Rare 	Unicorn Paladin 	10	0 	2 	0 	2 	
Rare 	Huntress 	10	4 	0 	0 	0 	
Rare 	Ursus Runebinder	10	0 	0 	0 	2 	
Mythic 	Gladiator 	0 	4 	2 	0 	0 	
Mythic 	Valkyrie 	10	2 	2 	0 	0 	
Mythic 	Red Wizard 	0 	2 	0 	0 	2 	
Mythic 	Rose Knight 	0 	2 	0 	4 	2 	
Mythic 	Princess 	5 	1 	1 	1 	1 	
Mythic 	Assassin 	? 	? 	? 	? 	? 	
Mythic 	Dragoon 	10	0 	0 	2 	0 	
Mythic 	Platinum Dragoon	10	0 	0 	2 	0 	
Mythic 	Storm Witch 	? 	? 	? 	? 	? 	
Limited 	Cursed Knight 	10	2 	0 	0 	0 	
Limited 	Death Priestess 	0 	0 	0 	2 	4 	
Limited 	Fox Thief 	? 	? 	? 	? 	? 	
Limited 	Moon Druid 	? 	0 	2 	0 	4 	
Limited 	Santa Guard 	5 	0 	4 	0 	0 	
Limited 	Bombardier 	? 	? 	? 	? 	? 	
Limited 	Brawler 	? 	? 	? 	? 	? 	
Limited 	Dark Knight 	? 	? 	? 	? 	? 	
Limited 	Egg Priestess 	? 	? 	? 	? 	? 	
Limited 	Frost Witch 	? 	? 	? 	? 	? 	
Limited 	Gunslinger 	? 	? 	? 	? 	? 	
Limited 	Minstrel 	? 	? 	? 	? 	? 	
Limited 	Icefang Huntress	10	4 	2 	0 	0 	
Limited 	Jester 	? 	? 	? 	? 	? 	
Limited 	Suave Halberdier	? 	? 	? 	? 	? 	
Limited 	Ursus King 	? 	? 	? 	? 	? 	
Limited 	Wyld Mage 	? 	? 	? 	? 	? 	
Limited 	Blacksmith 	? 	? 	? 	? 	? 	
Limited 	Banshee 	? 	? 	? 	? 	? 	
Limited 	Pumpkin King 	0 	0 	2 	2 	0 	
Limited 	Undead Knight 	0 	0 	2 	2 	0 	
Cost to Boost Ratio:
When starting with a recruit hero, there is a cost per recruit static that looks like this:
Recruit Hero: 800g
Novice Hero: 800g (800G for an extra 1)
Elite Hero: 1900g (6000G for an extra 2)
...
The cost per boost is the same for recruit heroes and novice heroes, but it quickly goes up after that. Though it must be taken into account that most people are buying the epic stone packs in order to get rarer stones than just the epic stones (master or champ stones and king stones), so people will have a lot of extra stones of which only real value is the selling value, it that is true for any stone elite or higher the ratio ends differently and the static that looks like this:
Recruit Hero: 800g
Novice Hero: 800g (800G for an extra 1)
Elite Hero: 1900g (6000G for an extra 2)
Master Hero: 1150g (1650 for an extra 4)
Champ Hero: 765g (3000 for an extra 8)
And if you have extra (otherwise useless) stones to get a unit all the way to Champion rank, the boost to cost ratio is the best. But if you start with a recruit or novice, and only have the unwanted stones to move from elite to master but not master to champ, the cost of buying the novice stones means the boost to cost ratio is poor and you would be better off using the gold get hire more recruits. Also, if you start with an Elite unit, any promotions with unwanted stones gives a good boost to gold ratio.
Tips:
* Recruit-level heroes are a great way to strengthen your main squad! Instead of spending 6000 gold on a Novice-level drop, you could buy 7 Recruit-level heroes, giving your squad a permanent 7x point attribute increase instead of 2x from novice.
* The next rank of heroes increase the same attributes, but with a 2x multiplier.
* Favorite units can also be locked to protect it from accidentally being boosted away.
* For more tips : http://lionhearttactics.com/forums/viewtopic.php?f=3&t=2398
Category:Basics