Spirit Keep

Sylvania[]

Sylvania is the Telarian demi-god of all growing things. Health and life force are rumored to spring from her.
The Spirit Keep is a potion dungeon ruled over by Sylvania's various manifestations, all of which have the Revitalize skill to some degree. In the keep it manifests as a passive skill that replenishes her health in a significant amounts, which makes her very difficult to defeat by pure damage and speed alone.
In addition she has two minions.
- The left minion has a strip buffs ability and casts a Stun spell.
- The right minion casts a Decrease ACC 50% which makes your champions more vulnerable to attack

Sylvania's Skills
Attack	Skill	Cooldown	Description
A1	Melt	Default	Attacks all enemies. Damage scales based on caster's HP
A2	Cleansing Spring	6 turns	Removes all Debuffs on the caster. Places a Block Debuffs on the caster for 2 turns.
A3	Revitalize	Passive	Heals the caster to 50% of their Max HP
A4	Almighty Immunity	Passive	Immune to Stun, Freeze, Sleep, Provoke, Block Active Skills, Block Passive Skills, Fear, True Fear, Petrification Petrification, also Immune to HP Exchange Effects, & HP Balancing Effects Cooldown Increasing Effects

Champions who have skills like Remove Buff, Steal Buff and Block Buffs are very useful here in keeping her from casting her healing buff.
Champions who have skills like Increase Speed, Increase Turn Meter and Decrease Turn Meter are also particularly effective here.
Since all of Sylvania's manifestations have a Spirit alignment, champions with a Magic alignment are at an advantage here whilst those with a Force alignment are at a disadvantage.
In the early stages it's not critical that you stop the revitalize buff... provided you can deal HP damage more quickly than it can be restored.
In later stages champions with HP Burn also become especially useful as the amount of damage done is based on the foe's max HP. When successfully landed, Rare champions can deal up to 50K damage from HP Burn per turn, while Epic and Legendary champions can deal up to 75K damage per turn.