Mystic Vale: Harmony Expansion

From AEG:

Harmony adds new advancement and vale cards, giving players more card crafting options and exciting new possibilities for combos. Amulets feature unique effects and greater variety over regular mana tokens. Leader cards grant abilities that can be upgraded to become even more powerful.

Amulets work like regular mana tokens. When you Spoil, you turn over your amulet to its active side that shows the Evoke symbol face up. You may “Evoke” your amulet to use its ability, as described on its active side. You must then turn your amulet over to its used side.

This is an expansion! You need the core game to play with this expansion.