Combine

Using two lower-rank Monster Cards and Essence Stones, users can combine one higher-rank Monster Card.

Users can combine lower-rank Monster Cards(e.g., E-Rank) to obtain higher-rank Monster Cards (D-Rank).

The amount of Essence Stones required for combining varies according to the Monster Card Rank, as shown in the table below:

Monster Cards Rank	Required Collectibles
D-Rank	E-Rank Monster Cards (2) + Essence Stone (10)
C-Rank	D-Rank Monster Cards (2) + Essence Stone (15)
B-Rank	C-Rank Monster Cards (2) + Essence Stone (20)
A-Rank	B-Rank Monster Cards (2) + Essence Stone (25)
S-Rank	A-Rank Monster Cards (2) + Essence Stone (30)