Specific core farming

If a player is without a charm for a creature, finding the right creature in the realms can take longer and longer depending on the amount of creatures unlocked.

A possible solution could be to add an alteration spell that allows the player to increase/guarantee a selected creature will spawn in the next realm.

Another solution could be to add a war mission to find a core for a selected creature.

Hear, hear!
Seconded!

I ran into this issue when I didn’t have a core for a creature. No core = no charm = difficult to find more. And when you DO find more, you have to have some luck to extract (or a team that focuses on just that).

Even once I have a core I usually go 20-30 realms below what I usually am so I don’t die due to enemy attacks when farming.