Each level a monster is fed to contributes one point to Monster Power. Only 3 copies of a particular monster contribute to MP. Additional duplicates of a monster, beyond the first 3, do not contribute to MP. Ranking up a monster and feeding it to its new maximum level provides a significant increase in MP.
The chart below displays the maximum MP a monster of various rarities and ranks can contribute:
|Rarity||Unranked||Rank 1||Rank 2||Rank 3||Rank 4||Rank 5|
Additionally, a monster's contribution to MP can be increased by equipping runes. Runes of higher levels contribute more to MP.