Upgrades

Upgrades can be applied to Cards to give them certain Effects or increased stats.

See also: Merchants

Unit Upgrades

Orange upgrades are common, red upgrades are rare.

Upgrade	Description	Acquired From
Strengthstone	Upgrade a unit with +10.	Merchant Shards of the Pyre
Heartstone	Upgrade a unit with +25.	Merchant Train Graveyard
Battlestone	Upgrade a unit with +5 and +10.	Merchant
Furystone	Upgrade a unit with Rage 7.	Merchant (Hellhorned only)
Thornstone	Upgrade a unit with +10 and Spikes 3.	Merchant (Awoken only)
Runestone	Upgrade a unit with Incant: Gain Armor 2.	Merchant (Stygian Guard only)
Shieldstone	Upgrade a unit with Damage Shield 3.	Merchant (Umbra only)
Wickstone	Upgrade a unit with Burnout 1, +5 and +5.	Merchant (Melting Remnant only)
Echo Stone	Upgrade a unit with '+3 per '.	Merchant (DLC) (Wurmkin only)
Largestone	Upgrade a unit with +1, +15, and +40.	Merchant
Frenzystone	Upgrade a unit with Multistrike 1.	Merchant
Immortalstone	Upgrade a unit with Endless.	Merchant
Speedstone	Upgrade a unit with Quick.	Merchant
Heaven's Aid	(One of these) +20. Revenge: +1. +5 and apply Endless. Extinguish: Deal 40 damage to the front enemy unit.	Heaven's Aid
Heaven's Finest	(One of these) +30. Revenge: +1 to all friendly units. +10 and apply Endless. Reduce cost to 0. Quick. Extinguish: Deal 60 damage to the front enemy unit.	Heaven's Finest
Major Refraction	Upgrade a unit with +2, +30, and +30.	Crystals
Minor Refraction	Upgrade a unit with 1.	Crystals
Monster Railspike	Upgrade a unit with +20 and +20 and add Purge.	Rail of the Covenant
Sunderstone	Upgrade a unit with 'Strike: Apply Melee Weakness 1.'	(DLC) Concealed Caverns
Sapstone	Upgrade a unit with 'Summon: Apply Sap 4 to enemy units.'	(DLC) Concealed Caverns
Heph's Consolation	Upgrade a unit with +10 and -1.	(DLC) Concealed Caverns.
Made to Fit	-3	(DLC) Comes innately with Heph the Blacksmith.

Engage Pact

At Divine Temples, a unit can be sacrificed in order to infuse its essence into another unit, and the cost of +25. A unit can be infused with another unit's essence only once.

Spell Upgrades

Blue or white upgrades are common, purple or black upgrades are rare.

Upgrade	Description	Acquired From
Emberstone	Upgrade a spell to cost -1.	Merchant
Powerstone	Upgrade a spell with +10 Magic Power.	Merchant
Surgestone	Upgrade a spell with +20 Magic Power and Consume.	Merchant
Eternalstone	Upgrade a spell to remove Consume and cost +1.	Merchant
Freezestone	Upgrade a spell to gain Permafrost.	Merchant
Keepstone	Upgrade a spell to gain Holdover.	Merchant
Stackstone	Upgrade a spell to gain Doublestack and cost +1.	Merchant
Seekstone	Upgrade a spell to gain Intrinsic.	(DLC) Divine Temple
Truestone	Upgrade a spell with +10 magic Power and Piercing.	(DLC) Divine Temple
Purgestone	Upgrade a spell gain Purge and cost -1.	(DLC) Divine Temple
Twinstone	Upgrade a spell to gain Spellchain.	(DLC) Divine Temple
Valuestone	Upgrade a spell to cost -2.	(DLC) Divine Temple
Extremestone	Upgrade a spell with +30 Magic Power.	(DLC) Divine Temple
Heaven's Aid	(One of these) Reserve: Restore 2 health to your Pyre. Gain 25. Add a copy of this card to your discard pile.	Heaven's Aid
Heaven's Finest	(One of these) Reserve: Restore 5 health to your Pyre. Gain 35. 0. Add a copy of this card to your discard pile. 0.	Heaven's Finest
Spell Railspike	Increase Magic Power by 20 and add Purge. Reduce cost to 0.	Rail of the Covenant
Improved Railspike	Upgrade all copies of Automatic Railspikes with +10 Magic Power and Consume.	Heph the Blacksmith
Unhinged Power	Reduce to 0 and apply Purge.	(DLC)Concealed Caverns