Summoners War: Lost Centuria is a team game, in which synergies and combos between characters are essential.
While to a degree influenced by its rarity, sometimes the strength of a particular monster will suggest that you play it in your composition.
Below is a tier list of Summoners War: Lost Centuria monsters, where the most effective creatures are ranked in descending order.

While the tier list below gives you an overview of the relative power of monsters, it is by no means a definitive guide. Ultimately, the way you play the monsters and the other units will strongly affect your gameplay experience.
On the other hand, this tier list should be suitable for new players, since Summoners War: Lost Centuria is relatively new. The tier list will obviously evolve according to the metagame, changes from Com2Us, and changes in optimal strategies.
Tier 1

Water
Legendary

Water
Legendary

Wind
Heroic

Dark
Rare

Light
Legendary

Light
Legendary

Water
Legendary

Wind
Normal

Fire
Legendary

Fire
Legendary

Wind
Legendary

Wind
Legendary
Tier 2

Dark
Legendary

Fire
Normal

Fire
Heroic

Water
Heroic

Fire
Rare

Water
Rare

Water
Normal

Wind
Normal

Fire
Heroic
Tier 3

Water
Heroic

Wind
Rare

Dark
Legendary

Fire
Heroic

Fire
Legendary

Wind
Rare

Wind
Heroic

Water
Rare

Wind
Normal

Water
Rare

Water
Normal
Tier 4

Wind
Rare

Light
Heroic

Fire
Heroic

Wind
Heroic

Fire
Rare

Water
Normal

Wind
Normal

Water
Rare

Fire
Rare

Fire
Normal